Single-motor electric bed

Abstract

The utility model discloses a single-motor electric bed which comprises a bed board assembly, a supporting framework device, a first angle adjusting assembly, a second angle adjusting assembly, a telescopic adjusting device and a linkage assembly. The bed board assembly comprises a front bed board, a rear bed board and a middle bed board, one side of the middle bed board is rotatably connected with the front bed board, and the other side of the middle bed board is rotatably connected with the rear bed board; the front bed board, the middle bed board and the rear bed board are arranged on the upper surface of the supporting framework device; the middle of the linkage assembly is rotatably connected to the middle of the supporting framework device, one end of the telescopic adjusting device is rotatably connected with the middle of the supporting framework device, the other end of the telescopic adjusting device is rotatably connected with one end of the second angle adjusting assembly, and the other end of the second angle adjusting assembly abuts against the front bed board. One end of the first angle adjusting assembly is rotatably connected with the supporting framework device, and the other end of the first angle adjusting assembly abuts against the rear bed board. The first angle adjusting assembly and the second angle adjusting assembly are connected through a linkage assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of electric beds, and in particular to a single-motor electric bed. Background Art

[0002] With the improvement of people's living standards, electric beds are widely used. Generally, an electric bed bed is composed of multiple bed boards hinged to each other. A motor arranged on the bed frame pushes a bed board to rise or fall at a hinge point through a hinged drive rod, thereby realizing the raising and lowering of the head or foot bed board respectively, meeting the needs of changing the body's lying posture.

[0003] The existing electric beds still have some shortcomings during use:

[0004] 1. The existing conventional electric beds have a complex structure, and are complicated to manufacture and move, which is not conducive to daily use;

[0005] 2. The existing electric beds can only drive the head or foot bed board to rise and fall in a one-to-one manner by connecting multiple motors and multiple driving rods, which makes the driving control more complicated. Summary of the invention

[0006] To this end, the present invention provides a single-motor electric bed to solve the above-mentioned problems in the prior art.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] According to a first aspect of the present invention, a single-motor electric bed comprises a bed board assembly, a support frame device, a first angle adjustment assembly, a second angle adjustment assembly, a telescopic adjustment device and a linkage assembly;

[0009] The bed board assembly includes a front bed board, a rear bed board and a middle bed board, one side of the middle bed board is rotatably connected to the front bed board, and the other side of the middle bed board is rotatably connected to the rear bed board; the front bed board, the middle bed board and the rear bed board are all arranged on the upper surface of the supporting frame device;

[0010] The middle part of the linkage assembly is rotatably connected to the middle part of the supporting frame device, one end of the telescopic adjustment device is rotatably connected to the middle part of the supporting frame device, the other end of the telescopic adjustment device is rotatably connected to one end of the second angle adjustment assembly, and the other end of the second angle adjustment assembly is in contact with the front bed board;

[0011] One end of the first angle adjustment component is rotatably connected to the support frame device, and the other end of the first angle adjustment component is in contact with the rear bed board;

[0012] The first angle adjustment component and the second angle adjustment component are connected via a linkage component.

[0013] Furthermore, the linkage assembly includes an intermediate rotating plate, a first movable rod and a second movable rod. The middle part of the intermediate rotating plate is rotatably arranged in the middle part of the supporting frame device. One end of the intermediate rotating plate is rotatably connected to the first movable rod, and the other end of the intermediate rotating plate is rotatably connected to the second movable rod. The end of the first movable rod away from the intermediate rotating plate is rotatably connected to the first angle adjustment assembly, and the end of the second movable rod away from the intermediate rotating plate is rotatably connected to the second angle adjustment assembly.

[0014] Further, the first angle adjustment assembly includes a first adjustment shaft and a first adjustment connecting rod;

[0015] The first adjusting shaft is rotatably connected to one end of the first movable rod away from the middle rotating plate, and both ends of the first adjusting shaft are connected to the first adjusting connecting rod, one end of the first adjusting connecting rod is rotatably connected to the supporting frame device, and the other end of the first adjusting connecting rod is abutted against the rear bed board.

[0016] Further, the second angle adjustment assembly includes a second adjustment shaft and a second adjustment connecting rod;

[0017] The second adjusting shaft is rotatably connected to the end of the second movable rod away from the middle rotating piece, and both ends of the second adjusting shaft are connected to the second adjusting connecting rod, one end of the second adjusting connecting rod is rotatably connected to the supporting frame device, and the other end of the second adjusting connecting rod is abutted against the front bed board, and the end of the telescopic adjusting device away from the supporting frame device is rotatably connected to the second adjusting shaft.

[0018] Furthermore, the first angle adjustment assembly also includes a first roller, and one end of the first adjustment link away from the supporting frame device is rotatably connected to the first roller, and the first roller abuts against the rear bed board.

[0019] Furthermore, the second angle adjustment assembly also includes a second roller, and the end of the second adjustment link away from the supporting frame device is rotatably connected to the second roller, and the second roller abuts against the front bed board.

[0020] Furthermore, the first angle adjustment assembly also includes a first support member, one end of the first support member is rotatably connected to an end of the first movable rod away from the middle rotating piece, and the other end of the first support member is connected to the first adjustment shaft.

[0021] Furthermore, the second angle adjustment assembly further includes two second support members;

[0022] One end of the two second support members is connected to the second adjustment shaft;

[0023] The other end of one of the second supporting members is rotatably connected to one end of the second movable rod away from the middle rotating piece, and the other end of the other second supporting member is connected to one end of the telescopic adjustment device away from the supporting frame device.

[0024] Furthermore, it also includes bed legs, and a plurality of bed legs are installed below the supporting frame device.

[0025] Furthermore, the telescopic adjustment device includes an electric telescopic rod and a rod seat, the rod seat is installed in the middle of the supporting frame device, one end of the electric telescopic rod is rotatably connected to the rod seat, and the other end of the electric telescopic rod is rotatably connected to the corresponding second support member.

[0026] The present invention has the following advantages: the electric bed drives the second telescopic adjustment component to work through the telescopic adjustment device, the second telescopic adjustment component drives the linkage component to work, the linkage component drives the first adjustment component to work, so that the electric bed can adjust the inclination angle of the front bed board corresponding to the head and foot of the bed and the inclination angle of the rear bed board only by one telescopic adjustment device, which makes the adjustment convenient and quick while reducing the processing and manufacturing cost of the electric bed. In addition, the structure of the electric bed is also relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0028] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0029] Figure 1 A first perspective view of a single-motor electric bed provided in accordance with some embodiments of the present invention.

[0030] Figure 2 A second perspective view of a three-dimensional view of a single-motor electric bed provided in accordance with some embodiments of the present invention.

[0031] Figure 3 A stereoscopic view of a single-motor electric bed without a bed board assembly provided for some embodiments of the present invention.

[0032] Figure 4 A first view of a stereoscopic diagram of a single-motor electric bed without a bed board assembly, a first supporting frame, and a second supporting frame provided in some embodiments of the present invention.

[0033] Figure 5 A second view of a stereoscopic diagram of a single-motor electric bed without a bed board assembly, a first support frame, and a second support frame provided in some embodiments of the present invention.

[0034] Figure 6 A stereoscopic view of a second movable rod of a single-motor electric bed provided in some embodiments of the present invention.

[0035] Figure 7 A side view of a telescopic adjustment device of a single-motor electric bed connected to a second angle adjustment assembly provided in some embodiments of the present invention.

[0036] Figure 8 This is one of the force analysis diagrams of the second supporting member of a single-motor electric bed provided in some embodiments of the present invention.

[0037] Fig. 9 A second force analysis diagram of a second supporting member of a single-motor electric bed provided in some embodiments of the present invention.

[0038] Fig.10 A third force analysis diagram of the second support member of a three-dimensional diagram of a single-motor electric bed provided in some embodiments of the present invention.

[0039] Fig.11 A front view of a first adjustment link of a single-motor electric bed provided in some embodiments of the present invention.

[0040] Fig.12 A front view of a second adjustment connecting rod of a single-motor electric bed provided in some embodiments of the present invention.

[0041] Fig.13 A schematic diagram of various bed boards of a single-motor electric bed in a patient leaning state provided in some embodiments of the present invention.

[0042] Fig.14 A schematic diagram of a three-dimensional diagram of a single-motor electric bed provided in some embodiments of the present invention, in which the front and rear bed boards are tilted in the middle position.

[0043] Fig.15 A schematic diagram of various bed boards of a single-motor electric bed with a patient lying flat provided in some embodiments of the present invention.

[0044] In the figure: 1, bed board assembly, 11, rear bed board, 12, first bed board, 13, second bed board, 14, third bed board, 15, front bed board, 2, first support frame, 21, first cross bar, 22, first longitudinal bar, 23, second cross bar, 24, first intermediate longitudinal bar, 25, second longitudinal bar, 26, first connecting member, 27, first connecting plate, 28, first connecting angle plate, 3, linkage assembly, 31, intermediate rotating piece, 32, first movable rod, 33, second movable rod, 331, intermediate rod body, 332, first movable part, 333, second movable part, 34, intermediate shaft, 35, first side shaft, 36, first rotating member, 37, through hole, 4, second support frame, 41, third cross bar, 42, third longitudinal bar, 43, fourth cross bar, 44, second intermediate longitudinal bar, 45, Fourth longitudinal rod, 46, second connecting member, 47, second connecting plate, 48, second connecting angle plate, 5, bed leg, 6, limit assembly, 61, outer connecting rod, 62, outer support member, 63, support block, 64, outer connecting member, 7, telescopic adjustment device, 71, electric telescopic rod, 72, rod seat, 8, first angle adjustment assembly, 81, first adjustment shaft, 82, first support member, 83, first connecting shaft, 84, first notch, 85, first adjusting link, 851, first adjusting part, 852, second adjusting part, 86, first roller, 9, second angle adjustment assembly, 91, second adjusting shaft, 92, second support member, 93, second connecting shaft, 94, second notch, 95, second adjusting link, 951, third adjusting part, 952, fourth adjusting part, 96, second roller. DETAILED DESCRIPTION

[0045] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] like Figures 1 to 15 As shown, a single-motor electric bed in an embodiment of the first aspect of the present invention comprises a bed board assembly 1, a supporting frame device, a first angle adjustment assembly 8, a second angle adjustment assembly 9, a telescopic adjustment device 7 and a linkage assembly 3;

[0047] The bed board assembly 1 includes a front bed board 15, a rear bed board 11 and a middle bed board, one side of the middle bed board is rotatably connected to the front bed board 15, and the other side of the middle bed board is rotatably connected to the rear bed board 11; the front bed board 15, the middle bed board and the rear bed board 11 are all arranged on the upper surface of the supporting frame device;

[0048] The middle part of the linkage assembly 3 is rotatably connected to the middle part of the supporting frame device, one end of the telescopic adjustment device 7 is rotatably connected to the middle part of the supporting frame device, the other end of the telescopic adjustment device is rotatably connected to one end of the second angle adjustment assembly 9, and the other end of the second angle adjustment assembly 9 is in contact with the front bed board 15;

[0049] One end of the first angle adjustment component 8 is rotatably connected to the supporting frame device, and the other end of the first angle adjustment component 8 is in contact with the rear bed board 11;

[0050] The first angle adjustment component 8 and the second angle adjustment component 9 are connected via a linkage component 3 .

[0051] In the above embodiment, it should be noted that the middle bed board includes a first bed board 12, a second bed board 13 and a third bed board 14. The first bed board 12 and the rear bed board 11 are rotatably connected by structures such as hinges, the second bed board 13 and the first bed board 11 are rotatably connected by structures such as hinges, the third bed board 14 and the second bed board 13 are rotatably connected, the front bed board 15 and the third bed board 14 are rotatably connected by structures such as hinges, and the second bed board 13 and the third bed board 14 are both connected to the middle part of the supporting frame device; the telescopic adjustment device can be an electric telescopic rod structure or a hydraulic telescopic rod or a starting telescopic rod or a manually adjustable telescopic rod or other structures.

[0052] The technical effect achieved by the above embodiment is: the electric bed drives the second telescopic adjustment component 9 to work through the telescopic adjustment device, the second telescopic adjustment component 9 drives the linkage component 3 to work, the linkage component 3 drives the first adjustment component 8 to work, so that the electric bed can adjust the inclination angle of the front bed board 15 corresponding to the head and foot of the bed and the inclination angle of the rear bed board 16 only by one telescopic adjustment device, which is convenient and quick to adjust and reduces the processing and manufacturing cost of the electric bed. In addition, the structure of the electric bed is also relatively simple.

[0053] Optional, such as Figures 1 to 15 As shown, in some embodiments, the linkage assembly 3 includes an intermediate rotating piece 31, a first movable rod 32 and a second movable rod 33. The middle part of the intermediate rotating piece 31 is rotatably arranged in the middle part of the supporting frame device, one end of the intermediate rotating piece 31 is rotatably connected to the first movable rod 32, and the other end of the intermediate rotating piece 31 is rotatably connected to the second movable rod 33. The end of the first movable rod 32 away from the intermediate rotating piece 31 is rotatably connected to the first angle adjustment assembly 8, and the end of the second movable rod 33 away from the intermediate rotating piece 31 is rotatably connected to the second angle adjustment assembly 9.

[0054] The first angle adjustment assembly 8 includes a first adjustment shaft 81 and a first adjustment link 85;

[0055] The first adjustment shaft 81 is rotatably connected to one end of the first movable rod 32 away from the middle rotating plate 31, and both ends of the first adjustment shaft 81 are connected to the first adjustment connecting rod 85. One end of the first adjustment connecting rod 85 is rotatably connected to the supporting frame device, and the other end of the first adjustment connecting rod 85 abuts against the rear bed board 11.

[0056] The second angle adjustment assembly 9 includes a second adjustment shaft 91 and a second adjustment link 95;

[0057] The second adjusting shaft 91 is rotatably connected to one end of the second movable rod 33 away from the middle rotating piece 31, and both ends of the second adjusting shaft 91 are connected to second adjusting connecting rods 95, one end of the second adjusting connecting rod 95 is rotatably connected to the supporting frame device, and the other end of the second adjusting connecting rod 95 abuts against the front bed board 15, and the end of the telescopic adjusting device 7 away from the supporting frame device is rotatably connected to the second adjusting shaft 91.

[0058] The first angle adjustment assembly 8 further includes a first support member 82 , one end of which is rotatably connected to an end of the first movable rod 32 away from the middle rotating piece 31 , and the other end of the first support member 82 is connected to the first adjustment shaft 81 .

[0059] The second angle adjustment assembly 9 also includes two second support members 92;

[0060] One end of the two second support members 92 is connected to the second adjustment shaft 91;

[0061] The other end of one of the second support members 92 is rotatably connected to one end of the second movable rod 33 away from the middle rotating piece 31, and the other end of the other second support member 92 is connected to one end of the telescopic adjustment device 7 away from the supporting frame device.

[0062] In the above optional embodiment, it should be noted that the support frame device includes a first support frame 2 and a second support frame 4, the first support frame 2 and the second support frame 4 are rotatably connected, the second bed board 12 is installed on the first support frame 2, and the third bed board 13 is installed on the second support frame 4;

[0063] The first supporting frame 2 comprises a first cross bar 21, a first longitudinal bar 22, a second cross bar 23, a first intermediate longitudinal bar 24, a second longitudinal bar 25, a first connecting piece 26, a first connecting plate 27 and a first connecting angle plate 28. The first cross bar 21, the first longitudinal bar 22, the second cross bar 23, the first intermediate longitudinal bar 24 and the second longitudinal bar 25 are connected in sequence, and the first cross bar 21, the first longitudinal bar 22, the second cross bar 23, the first intermediate longitudinal bar 24 and the second longitudinal bar 25 form a rectangular frame shape. One end of the first intermediate longitudinal bar 24 is connected to the first cross bar 21, and the other end of the first intermediate longitudinal bar 24 is connected to the second cross bar 23. The first intermediate longitudinal bar 24 is located between the first longitudinal bar 22 and the second longitudinal bar 25. Both ends of the first adjusting shaft 81 are fixedly connected with a first adjusting link 85 by welding or screwing, and one end of each first adjusting link 85 is rotatably connected to the first supporting frame 2 through a first connecting piece 26. Specifically, one of the first connecting pieces 26 and the first intermediate longitudinal bar 24 is connected to the first longitudinal bar 21. The rods 24 are connected by bolt connection or welding connection, and another first connecting member 26 is connected to the first longitudinal rod 22 by bolt connection or welding connection; the two first adjustment links 85 are rotatably connected to the two first connecting members 26 in a one-to-one correspondence; each first adjustment link 85 includes a first adjustment portion 851 and a second adjustment portion 852, the first adjustment portion 851 and the second adjustment portion 852 are integrally formed, the end of the first adjustment portion 851 away from the second adjustment portion 852 is rotatably connected to the corresponding first connecting member 26, the end of the second adjustment portion 852 away from the first adjustment portion 851 abuts against the rear bed board 11, and the angle between the first adjustment portion 851 and the second adjustment portion 852 is an obtuse angle, both ends of the first cross bar 21 are connected to the first connecting plate 27, the first connecting plate 27 is rotatably connected to the second supporting frame 4, a plurality of first connecting angle plates 28 are arranged on the side of the first cross bar 21, and the first cross bar 21 is connected to the second bed board 13 through the plurality of first connecting angle plates 28;

[0064] The first adjustment shaft 81 is installed at a position where the first adjustment portion 851 and the second adjustment portion 852 are connected;

[0065] The second supporting frame 4 includes a third cross bar 41, a third longitudinal bar 42, a fourth cross bar 43, a second intermediate longitudinal bar 44, a fourth longitudinal bar 45, a second connecting member 46, a second connecting plate 47 and a second connecting angle plate 48;

[0066] The third cross bar 41, the third longitudinal bar 42, the fourth cross bar 43, the second intermediate longitudinal bar 44 and the fourth longitudinal bar 45 are connected in sequence, and the third cross bar 41, the third longitudinal bar 42, the fourth cross bar 43, the second intermediate longitudinal bar 44 and the fourth longitudinal bar 45 form a rectangular frame shape. One end of the second intermediate longitudinal bar 44 is connected to the third cross bar 41, and the other end of the second intermediate longitudinal bar 44 is connected to the fourth cross bar 43. The second intermediate longitudinal bar 44 is located between the third longitudinal bar 42 and the fourth longitudinal bar 45. Both ends of the second adjustment shaft 91 are fixedly connected with a second adjustment link 95 by welding or screwing, and one end of each second adjustment link 95 is rotatably connected to the second support frame 4 through a second connecting member 46; specifically, one second connecting member 46 is connected to the second intermediate longitudinal bar 44 by bolting or welding, and the other second connecting member 46 is connected to the third longitudinal bar 4 2 are connected by bolt connection or welding connection; two second adjustment links 95 are rotatably connected with two second connecting members 46 in a one-to-one correspondence; each second adjustment link 95 includes a third adjustment portion 951 and a fourth adjustment portion 952, the third adjustment portion 951 and the fourth adjustment portion 952 are integrally formed, the end of the third adjustment portion 951 away from the fourth adjustment portion 952 is rotatably connected with the corresponding second connecting member 46, the end of the fourth adjustment portion 952 away from the third adjustment portion 951 abuts against the front bed board 15, the angle between the third adjustment portion 951 and the fourth adjustment portion 952 is an obtuse angle, both ends of the third cross bar 41 are connected with a second connecting plate 47, the second connecting plate 47 and the first connecting plate 27 are rotatably connected in a one-to-one correspondence, a plurality of second connecting angle plates 48 are arranged on the side of the third cross bar 41, and the third cross bar 41 is connected to the third bed board 14 through the plurality of second connecting angle plates 48;

[0067] The first support member 82 is provided with a first notch 84, and the second support member 92 is provided with a second notch 94. The first notch 84 and the second notch 94 are both in the shape of an arc.

[0068] The telescopic adjustment device 7 includes an electric telescopic rod 71 and a rod seat 72. The rod seat 72 is installed in the middle of the supporting frame device. One end of the electric telescopic rod 71 is rotatably connected to the rod seat 72, and the other end of the electric telescopic rod 71 is rotatably connected to the corresponding second support member 92.

[0069] The rod seat 72 is installed on the side wall of the third cross bar 41 by bolt connection, welding or clamping, and the electric telescopic rod 71 and the rod seat 72 are rotatably connected through a rotating shaft;

[0070] When the patient lies on the bed, with the front bed board 15 and the rear bed board 11 both in a horizontal state, the lower surface of the second support member 92 is inclined at an acute angle relative to the ground, and the lower surface of the first support member 82 is inclined at an acute angle relative to the ground.

[0071] The second adjustment shaft 91 is installed at a position where the third adjustment portion 951 and the fourth adjustment portion 952 are connected;

[0072] The length of the fourth adjustment portion 952 is greater than the length of the second adjustment portion 852;

[0073] The linkage assembly 3 further includes an intermediate shaft 34 and a first side shaft 35, and the first angle adjustment assembly 8 further includes a first connecting shaft 83. The middle portion of the intermediate rotating piece 31 is rotatably connected to the intermediate shaft 34, and one end of the intermediate rotating piece 31 is connected to the first side shaft 35 by bolt connection, welding, or clamping. The first connecting shaft 83 is inserted at the end of the first support member 82 away from the first adjustment shaft 81, and one end of the first movable rod 32 is rotatably connected to the first connecting shaft 83, and the other end of the first connecting shaft 83 is rotatably connected to the first side shaft 35. The middle portion of the intermediate rotating piece 31 is rotatably connected to the middle portion of the first cross bar 21 through the intermediate shaft 34.

[0074] When the patient leans on the bed, the inclination of the front bed board 15 is greater than the inclination angle of the rear bed board 11 .

[0075] The second angle adjustment assembly 9 further includes a second connecting shaft 93, the end of the second support member 92 away from the second adjustment shaft 91 is connected to the second connecting shaft 93, the other end of the middle rotating piece 31 is provided with a through hole 37, one end of the second movable rod 33 is movably connected to the middle rotating piece 31 through the through hole 37, and the other end of the second movable rod 33 is rotatably connected to the second connecting shaft 93;

[0076] First, optionally, the second movable rod 33 and the middle rotating piece 31 are connected via a universal joint or a ball shaft;

[0077] Secondly, the second movable rod 33 includes an intermediate rod body 331, a first movable part 332 and a second movable part 333. The first movable part 332 is provided at one end of the intermediate rod body 331, and the second movable part 333 is provided at one end of the intermediate rod body 331. The first movable part 332 passes through the through hole 37 with a gap and is wound around the intermediate rotating piece 31, and the second movable part 33 is wound around the second connecting shaft 93.

[0078] In the case where the bed is placed normally, the front bed board 15 is at the position of the head of the bed, the rear bed board 11 is at the position of the foot of the bed, the up and down direction of the bed is the Z direction, the direction from the head of the bed to the foot of the bed is the Y direction, and the left and right direction when the patient lies flat is the X direction. The axis of the first movable rod 32 remains horizontal in the X direction, and the axis height of the first connecting shaft 83 remains horizontal in the X direction. When the first support member 82 is pushed to rotate, the height of the first connecting shaft 83 will decrease with the rotation of the first support member 82, and at the same time, the first adjustment shaft 81 will rise with the first connecting shaft 83, thereby achieving that the axis height of the first connecting shaft 83 remains horizontal in the X direction;

[0079] The second movable rod 33 is connected to the middle rotating piece 31 by a universal joint or a ball shaft, or the first movable part 332 is passed through the through hole 37 with a gap and is wrapped around the middle rotating piece 31. The arrangement of the second movable part 33 around the second connecting shaft 93 enables the end of the second movable rod 33 close to the second support member 92 to reliably move downward while moving forward, thereby realizing the adjustment of the inclination angle of the front bed board 15.

[0080] The working principle of the electric bed is as follows: when it is necessary to adjust the inclination angle of the rear bed board 11 and the front bed board 15 of the electric bed, the electric telescopic rod 71 is turned on, and the second support member 92 is driven to move by the extension or shortening of the electric telescopic rod 71, and the second adjustment shaft 91 and the second movable rod 33 are driven to move, and the second adjustment connecting rod 95 is driven to rotate relative to the second support frame 4 by the movement of the second adjustment connecting rod 91, and the front bed board 15 is pushed to adjust the inclination angle of the front bed board 15 by the rotation of the second adjustment connecting rod 95, and the middle rotating piece 31 is driven to rotate by the movement of the second movable rod 33, and the second movable rod 33 is driven to move and the first support member 82 is driven to move, and the first adjustment shaft 81 is driven to move, and the first adjustment connecting rod 85 is driven to rotate relative to the first support frame 2 by the movement of the first adjustment shaft 81, and the rear bed board 11 is pushed to adjust the inclination angle of the rear bed board 11 by the rotation of the first adjustment connecting rod 85;

[0081] More specifically, when the inclination angle of the rear bed board 11 and the front bed board 15 needs to be increased, when the electric telescopic rod 71 is extended, the center of the circle of the connecting shaft 73 between the electric telescopic rod 71 and the second support member 92 is subjected to a force Fa, and the force Fa is decomposed into a forward force Fa1 and a downward force Fa2; when the force Fa continues to be transmitted forward, the arc entrance of the second notch 94 is subjected to a force Fb, and the force Fb is decomposed into a forward force Fb1 and an upward force Fb2; the midpoint of the first half of the arc of the second notch 94 is subjected to a force Fc, and the force Fb is decomposed into Forward force Fc1 and upward force Fc2; at the midpoint of the rear half of the arc of the second notch 94, the second adjustment shaft 91 is subjected to force Fd, and force Fd is decomposed into forward force Fd1 and downward force Fd2; at the arc exit of the second notch 94, the second adjustment shaft 91 is subjected to force Fe, and force Fe is decomposed into forward force Fe1 and downward force Fe2, and the upward force Fb2 and the downward force Fe2 are in opposite directions to form a torsion, thereby increasing the convenience of the electric telescopic rod 71 to push the second support member 92, and reducing the requirement for the driving force of the electric telescopic rod 71.

[0082] The beneficial effects of the above optional embodiment are: through the coordinated arrangement of the middle rotating piece 31, the first movable rod 32 and the second movable rod 33, the second angle adjustment component 9 and the first angle adjustment component 8 can be controlled by one electric telescopic rod 71, thereby realizing the linkage adjustment of the inclination angle of the front bed board 15 and the rear bed board 11;

[0083] The rotatable connection between the first connecting plate 27 and the second connecting plate 47 enables the electric bed to be folded when not in use. When the electric bed needs to be folded, it is only necessary to disconnect the connection between the second movable rod 33 and the middle rotating piece 31, thereby increasing the convenience of placing and carrying the electric bed.

[0084] One end of the electric telescopic rod 71 is rotatably connected to the rod seat 72, and the other end of the electric telescopic rod 71 is rotatably connected to the corresponding second support member 92, so as to avoid the situation that the electric telescopic rod 71 is inconvenient to push when driving the second support member 92 to rotate;

[0085] By setting the angle between the third adjustment portion 951 and the fourth adjustment portion 952 to be an obtuse angle and the angle between the first adjustment portion 851 and the second adjustment portion 852 to be an obtuse angle, reliable adjustment of the inclination angles of the front bed board 15 and the rear bed board 11 can be ensured.

[0086] Optional, such as Figures 1 to 15 As shown, in some embodiments, the first angle adjustment assembly 8 further includes a first roller 86 , and one end of the first adjustment link 85 away from the supporting frame device is rotatably connected to the first roller 86 , and the first roller 86 abuts against the rear bed board 11 .

[0087] The second angle adjustment assembly 9 also includes a second roller 96 . One end of the second adjustment link 95 away from the supporting frame device is rotatably connected to the second roller 96 . The second roller 96 abuts against the front bed board 15 .

[0088] In the above optional embodiment, it should be noted that when the front bed board 15 and the rear bed board 11 are both in a straight state, the distance between the first roller 86 and the edge of the rear bed board 11 close to the first bed board 12 is smaller than the distance between the first roller 86 and the edge of the rear bed board 11 away from the first bed board 12;

[0089] The distance between the second roller 96 and the edge of the front bed board 15 close to the third bed board 14 is greater than the distance between the second roller 96 and the edge of the front bed board 15 away from the third bed board 14;

[0090] In addition, the electric bed also includes a limit assembly 6, which includes an outer connecting rod 61, an outer support member 62, a support block 63 and an outer connecting member 64. The lower side wall of the first longitudinal rod 22 and the outer side wall of the second longitudinal rod 25 are connected to the support block 63 by bolt connection, welding or clamping, and the side of the support block 63 is provided with an outer support member 62; one end of the outer connecting rod 61 is rotatably connected to the outer support member 62, and the other end of the outer connecting rod 61 is rotatably connected to the outer connecting member 64, and the outer connecting member 64 is detachably connected to the rear bed board 11.

[0091] The beneficial effect of the above optional embodiment is that the arrangement of the limiting assembly 6 including the outer connecting rod 61, the outer support member 62, the support block 63 and the outer connecting member 64 can ensure that the rear bed board 11 can be reliably adjusted in angle.

[0092] Optional, such as Figures 1 to 15 As shown, in some embodiments, bed legs 5 are further included, and a plurality of bed legs 5 are installed below the supporting skeleton device.

[0093] In the above optional embodiments, it should be noted that the number of the bed legs 5 is greater than or equal to six. Specifically, the number of the bed legs 5 is six, eight, ten, and so on.

[0094] The beneficial effect of the above optional embodiment is that reliable support of the electric bed is achieved by providing a plurality of bed legs 5 .

[0095] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

[0096] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as within the scope of implementation of the present invention without substantially changing the technical content.

Claims

1. A single-motor electric bed, characterized in that: It comprises a bed board assembly (1), a supporting frame device, a first angle adjustment assembly (8), a second angle adjustment assembly (9), a telescopic adjustment device (7) and a linkage assembly (3); The bed board assembly (1) comprises a front bed board (15), a rear bed board (11) and a middle bed board, one side of the middle bed board is rotatably connected to the front bed board (15), and the other side of the middle bed board is rotatably connected to the rear bed board (11); the front bed board (15), the middle bed board and the rear bed board (11) are all arranged on the upper surface of the supporting frame device; The middle part of the linkage assembly (3) is rotatably connected to the middle part of the support frame device, one end of the telescopic adjustment device (7) is rotatably connected to the middle part of the support frame device, the other end of the telescopic adjustment device is rotatably connected to one end of the second angle adjustment assembly (9), and the other end of the second angle adjustment assembly (9) is in contact with the front bed board (15); One end of the first angle adjustment component (8) is rotatably connected to the support frame device, and the other end of the first angle adjustment component (8) is in contact with the rear bed board (11); The first angle adjustment component (8) and the second angle adjustment component (9) are connected via the linkage component (3).

2. A single-motor electric bed according to claim 1, characterized in that: The linkage assembly (3) comprises an intermediate rotating piece (31), a first movable rod (32) and a second movable rod (33); the middle portion of the intermediate rotating piece (31) is rotatably arranged in the middle portion of the supporting frame device; one end of the intermediate rotating piece (31) is rotatably connected to the first movable rod (32); the other end of the intermediate rotating piece (31) is rotatably connected to the second movable rod (33); the end of the first movable rod (32) away from the intermediate rotating piece (31) is rotatably connected to the first angle adjustment assembly (8); and the end of the second movable rod (33) away from the intermediate rotating piece (31) is rotatably connected to the second angle adjustment assembly (9).

3. A single-motor electric bed according to claim 2, characterized in that: The first angle adjustment assembly (8) comprises a first adjustment shaft (81) and a first adjustment connecting rod (85); The first adjustment shaft (81) is rotatably connected to one end of the first movable rod (32) away from the middle rotating plate (31), and both ends of the first adjustment shaft (81) are connected to first adjustment connecting rods (85), one end of the first adjustment connecting rod (85) is rotatably connected to the supporting frame device, and the other end of the first adjustment connecting rod (85) is in contact with the rear bed board (11).

4. A single-motor electric bed according to claim 2, characterized in that: The second angle adjustment assembly (9) comprises a second adjustment shaft (91) and a second adjustment connecting rod (95); The second adjustment shaft (91) is rotatably connected to one end of the second movable rod (33) away from the middle rotating plate (31), and both ends of the second adjustment shaft (91) are connected to second adjustment connecting rods (95), one end of the second adjustment connecting rod (95) is rotatably connected to the supporting frame device, and the other end of the second adjustment connecting rod (95) is abutted against the front bed board (15), and the end of the telescopic adjustment device (7) away from the supporting frame device is rotatably connected to the second adjustment shaft (91).

5. The single-motor electric bed according to claim 3, characterized in that: The first angle adjustment assembly (8) further comprises a first roller (86), and one end of the first adjustment link (85) away from the supporting frame device is rotatably connected to the first roller (86), and the first roller (86) abuts against the rear bed board (11).

6. The single-motor electric bed according to claim 4, characterized in that: The second angle adjustment assembly (9) further comprises a second roller (96), and one end of the second adjustment link (95) away from the supporting frame device is rotatably connected to the second roller (96), and the second roller (96) abuts against the front bed board (15).

7. The single-motor electric bed according to claim 3, characterized in that: The first angle adjustment assembly (8) further comprises a first support member (82), one end of the first support member (82) being rotatably connected to an end of the first movable rod (32) away from the middle rotating piece (31), and the other end of the first support member (82) being connected to the first adjustment shaft (81).

8. The single-motor electric bed according to claim 4, characterized in that: The second angle adjustment assembly (9) further comprises two second support members (92); One end of each of the two second support members (92) is connected to the second adjustment shaft (91); The other end of one of the second support members (92) is rotatably connected to one end of the second movable rod (33) away from the middle rotating piece (31), and the other end of the other second support member (92) is connected to one end of the telescopic adjustment device (7) away from the supporting frame device.

9. The single-motor electric bed according to claim 1, characterized in that: It also comprises bed legs (5), and a plurality of bed legs (5) are installed below the supporting frame device.

10. The single-motor electric bed according to claim 8, characterized in that: The telescopic adjustment device (7) comprises an electric telescopic rod (71) and a rod seat (72); the rod seat (72) is mounted in the middle of the supporting frame device; one end of the electric telescopic rod (71) is rotatably connected to the rod seat (72); and the other end of the electric telescopic rod (71) is rotatably connected to the corresponding second support member (92).

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