A method for vertically lifting a bed body

Abstract

The application discloses a bed body vertical lifting method, which is provided with a bed frame assembly, an outer supporting arm assembly, a connecting rod, a driving assembly and a bed leg assembly; one end of the outer supporting arm assembly and the bed frame assembly are provided with a first hinge, the other end of the outer supporting arm assembly, the bed leg assembly and one end of the connecting rod are provided with a second hinge, and the other end of the connecting rod, the bed frame assembly and the bed leg assembly are provided with a third hinge; the driving assembly drives the one end of the outer supporting arm assembly to perform a circular arc motion with the first hinge as the center, the other end of the outer supporting arm assembly performs a circular arc motion at the second hinge, the bed leg assembly performs a circular arc motion with the bottom of the bed leg assembly as the center, and the bed leg assembly performs a lifting action at the third hinge. The application can reduce the bed body to the minimum height, reduce the size of the bed body, increase the cabinet volume and reduce the transportation cost; the displacement of the casters in the lifting process is eliminated, and the stability and safety of the bed body structure are enhanced.

Description

Technical Field

[0001] This invention relates to the field of bed lifting technology, and in particular to a method for vertically lifting a bed. Background Technology

[0002] Lifting beds are common medical devices. Patients lie on the bed board of the lifting bed, and the height can be adjusted according to their needs.

[0003] A scissor-type hospital bed disclosed in related technology comprises a bed board, a bed frame, and bed legs; two bed legs are pivotally connected to the lower left and right sides of the bed frame; each pair of bed legs on the same side are pivotally connected together in a scissor shape; a support rod is fixed between each pair of symmetrical bed legs, and a first electric push rod is installed between the two support rods; the bed board is divided into a head section, a middle fixed section, a middle movable section, and a foot section; the end of the head section near the foot is pivotally connected to the bed frame, and a second electric push rod is installed between the head section and the bed frame; the middle fixed section is fixedly installed on the bed frame; the end of the middle movable section near the head is pivotally connected to the bed frame, and the end near the foot is pivotally connected to the end of the foot section near the head; the end of the foot section near the foot is pivotally connected to one end of a swing arm, and the other end of the swing arm is pivotally connected to the bed frame; a third electric push rod is installed between the foot section and the bed frame.

[0004] Currently, traditional bed lifting mechanisms use a scissor-type mechanism, which has a limited range of motion, especially when the bed surface is lowered, resulting in a relatively large overall height. This lifting mechanism also restricts the bed's dimensions, reducing the amount of material that can be packed into a cabinet and increasing transportation costs. Furthermore, because existing scissor-type lifting mechanisms use deep groove ball bearings on the outer support arms, and one end of the scissor-type mechanism is fixed and rotated with the bed legs, the casters on the bed legs can shift during lifting, potentially causing the bed to move and posing a safety hazard. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a solution that solves the problems of limited lifting range of traditional beds, inconvenience in transportation, easy movement of the bed during use, and significant safety hazards.

[0007] Technical issues.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0010] This invention provides a method for vertically raising and lowering a bed, including a bed frame assembly, an outer support arm assembly, a connecting rod, a drive assembly, and a bed leg assembly;

[0011] One end of the external support arm assembly and the bed frame assembly have a first hinge point, the other end of the external support arm assembly, the bed leg assembly and one end of the connecting rod have a second hinge point, and the other end of the connecting rod, the bed frame assembly and the bed leg assembly have a third hinge point.

[0012] The drive assembly drives one end of the outer support arm assembly to perform an arc motion with the first hinge as the center, and the other end of the outer support arm assembly to perform an arc motion with the bottom of the bed leg assembly as the center, and the bed leg assembly to perform a lifting action at the third hinge.

[0013] As a preferred embodiment of the method for vertically raising and lowering the bed, the drive assembly drives one end of the outer support arm assembly to perform an arc motion downward at the second hinge with the first hinge as the center, the other end of the outer support arm assembly to perform an arc motion downward at the second hinge, the bed leg assembly to perform an arc motion downward with the bottom of the bed leg assembly as the center, and the bed leg assembly to perform a raising action at one end of the third hinge.

[0014] As a preferred embodiment of the method for vertically raising and lowering the bed, the drive assembly drives one end of the outer support arm assembly to perform an arc motion upward at the second hinge with the first hinge as the center, the other end of the outer support arm assembly to perform an arc motion upward with the bottom of the bed leg assembly as the center, and the end of the bed leg assembly at the third hinge to perform a lowering action.

[0015] As a preferred embodiment of the method for vertically lifting the bed, the bed frame assembly includes a bed frame, a slide rail, a first crossbeam, and a support arm adapter; the slide rail is connected to the inner side of the bed frame, the first crossbeam is connected to the end of the bed frame, and the support arm adapter is connected to the first crossbeam.

[0016] The outer outrigger assembly includes an outer outrigger frame, one end of which is hinged to the outrigger adapter to form the first hinge point, and the other end of which is hinged to one end of the connecting rod to form the second hinge point.

[0017] The bed leg assembly includes a bed leg frame and a slide groove. The slide groove is connected to the inner side of the bed leg frame. The upper end of the bed leg frame and the other end of the connecting rod are hinged to form the third hinge joint. The third hinge joint of the bed leg frame and the connecting rod is provided with a first deep groove ball bearing, which is located inside the slide groove. The second hinge joint of the outer support arm frame and the connecting rod is provided with a second deep groove ball bearing, which is located inside the slide groove.

[0018] The second hinge also performs linear motion along the groove via the second deep groove ball bearing;

[0019] The third hinge also performs linear motion along the slide rail via the first deep groove ball bearing.

[0020] As a preferred embodiment of the method for vertically lifting the bed, there are two sets of the first crossbeams, and the two sets of the first crossbeams are connected to both ends of the bed frame;

[0021] Each of the first crossbeams is connected to a pair of the outrigger adapters; each pair of outrigger adapters is connected to a set of the outer outrigger frame.

[0022] As a preferred embodiment of the method for vertically lifting the bed, each of the external support arm assemblies is connected to a pair of bed leg assemblies via a pair of connecting rods;

[0023] The outer side of the bed leg frame is connected to the first leg shaft, and the first deep groove ball bearing is connected to the first leg shaft.

[0024] As a preferred embodiment of the method for vertically lifting the bed, the bed frame assembly further includes a second crossbeam, the end of which is connected to the inner side of the bed frame, and the side of the second crossbeam is connected to a first push rod adapter.

[0025] The outer boom assembly also includes a third crossbeam, which is connected to the inside of the outer boom frame, and a second push rod adapter is connected to the middle of the third crossbeam.

[0026] A lifting electric push rod is connected between the first push rod adapter and the second push rod adapter.

[0027] As a preferred embodiment of the vertical lifting method for the bed, the first push rod adapter is provided in two sets, and the two sets of the first push rod adapter are connected to both sides of the second crossbeam; each set of the outer support arm assembly has a set of the second push rod adapter connected to the middle of the third crossbeam;

[0028] The lifting electric push rod is provided in two sets, and each set of the lifting electric push rod is connected between the first push rod adapter and the second push rod adapter of each set.

[0029] As a preferred embodiment of the vertical lifting method for the bed, the first crossbeam is connected to a controller mounting plate, and the upper end of the controller mounting plate is connected to an electric push rod controller, which is used to control the movement of the lifting electric push rod.

[0030] The outer support arm and the third crossbeam are connected in an I-shape, and the outer support arm is provided with a threaded hole that is hinged to the connecting rod;

[0031] The outer side of the outer support frame is connected to a second leg shaft, and the second deep groove ball bearing is connected to the second leg shaft.

[0032] As a preferred embodiment of the method for vertically raising and lowering the bed, the bed leg assembly further includes a horizontal shaft tube and a caster assembly. The horizontal shaft tube is connected to the lower end of the bed leg frame, and the caster assembly includes a caster mounting seat and a caster body. The middle part of the caster mounting seat is connected to the end of the horizontal shaft tube, and the caster body is connected to the caster mounting seat.

[0033] (III) Beneficial Effects

[0034] The beneficial effects of this invention are:

[0035] The device comprises a bed frame assembly, an outer support arm assembly, a connecting rod, a drive assembly, and bed leg assemblies. One end of the outer support arm assembly and the bed frame assembly have a first hinge; the other end of the outer support arm assembly, the bed leg assembly, and one end of the connecting rod have a second hinge; and the other end of the connecting rod, the bed frame assembly, and the bed leg assembly have a third hinge. The drive assembly drives one end of the outer support arm assembly to perform an arc motion around the first hinge, and the other end of the outer support arm assembly to perform an arc motion around its bottom. The bed leg assembly performs a lifting and lowering action at the third hinge. This invention allows the bed to be lowered to a minimum height, reducing the overall dimensions of the bed, increasing the amount of cabinet space required, and reducing transportation costs. It also eliminates displacement of the casters during lifting and lowering, enhancing the stability and safety of the bed structure. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the lifting structure after it has been raised in the vertical lifting method for the bed provided in this embodiment of the invention;

[0037] Figure 2 This is a schematic diagram of the lifting structure after it has returned to its original position in the vertical lifting method for the bed provided in this embodiment of the invention;

[0038] Figure 3 This is a schematic diagram of the bed frame assembly structure in the bed vertical lifting method provided in this embodiment of the invention;

[0039] Figure 4 This is a schematic diagram of the outer support arm assembly structure in the bed vertical lifting method provided in this embodiment of the invention;

[0040] Figure 5 This is a schematic diagram of the bed leg assembly structure in the bed vertical lifting method provided in this embodiment of the invention.

[0041] [Explanation of Labels in the Attached Image]

[0042] 1. Bed frame assembly; 2. Outer arm assembly; 3. Connecting rod; 4. Drive assembly; 5. Bed leg assembly; 6. Bed frame; 7. Slide rail; 8. First crossbeam; 9. Outer arm adapter; 10. Outer arm frame body; 11. Bed leg frame; 12. Slide rail; 13. First deep groove ball bearing; 14. Second deep groove ball bearing; 15. Second crossbeam; 16. First push rod adapter; 17. Third crossbeam; 18. Second push rod adapter; 19. Lifting electric push rod; 20. Controller mounting plate; 21. Electric push rod controller; 22. First leg shaft; 23. Second leg shaft; 24. Horizontal shaft round tube; 25. Caster assembly; 26. Caster mounting base; 27. Caster body;

[0043] I. First hinge; II. Second hinge; III. Third hinge. Detailed Implementation

[0044] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0045] See Figure 1 and Figure 2 This invention provides a method for vertically lifting a bed, including a bed frame assembly 1, an outer support arm assembly 2, a connecting rod 3, a drive assembly 4, and a bed leg assembly 5;

[0046] Among them, one end of the outer support arm assembly 2 and the bed frame assembly 1 have a first hinge I, the other end of the outer support arm assembly 2, the bed leg assembly 5 and one end of the connecting rod 3 have a second hinge II, and the other end of the connecting rod 3, the bed frame assembly 1 and the bed leg assembly 5 have a third hinge III.

[0047] Among them, the drive assembly 4 drives one end of the outer support arm assembly 2 to perform an arc motion with the first hinge point I as the center, and the other end of the outer support arm assembly 2 to perform an arc motion with the second hinge point II. The bed leg assembly 5 performs an arc motion with the bottom of the bed leg assembly 5 as the center, and the bed leg assembly 5 performs a lifting action at the third hinge point III.

[0048] In this embodiment, during the vertical lifting of the bed: the drive assembly 4 drives one end of the outer support arm assembly 2 to perform an arc motion downwards around the first hinge point I, while the other end of the outer support arm assembly 2 performs an arc motion downwards around the second hinge point II. The bed leg assembly 5 performs an arc motion downwards around its bottom, and the bed leg assembly 5 lifts at one end of the third hinge point III. Furthermore, the first hinge point I, the second hinge point II, and the third hinge point III cooperate to achieve the lifting action of the bed leg assembly 5, which in turn drives the bed to rise vertically.

[0049] In this embodiment, during the vertical descent of the bed: the drive assembly 4 drives one end of the outer support arm assembly 2 to perform an arc motion with the first hinge point I as the center, and the other end of the outer support arm assembly 2 to perform an arc motion upward with the second hinge point II. The bed leg assembly 5 performs an arc motion upward with the bottom of the bed leg assembly 5 as the center, and the bed leg assembly 5 performs a descent action at one end of the third hinge point III. Furthermore, the first hinge point I, the second hinge point II, and the third hinge point III cooperate with each other to realize the descent action of the bed leg assembly 5, and the descent of the bed leg assembly 5 can drive the cooperating bed to descend vertically.

[0050] See Figure 3 and Figure 4 In this embodiment, the bed frame assembly 1 includes a bed frame 6, a slide rail 7, a first crossbeam 8, and a support arm adapter 9; the slide rail 7 is connected to the inner side of the bed frame 6, the first crossbeam 8 is connected to the end of the bed frame 6, and the support arm adapter 9 is connected to the first crossbeam 8; the outer support arm assembly 2 includes an outer support arm frame 10, one end of the outer support arm frame 10 is hinged to the support arm adapter 9 to form a first hinge point I, and the other end of the outer support arm frame 10 is hinged to one end of the connecting rod 3 to form a second hinge point II; the bed leg assembly 5 The device includes a bed leg frame 11 and a slide 12. The slide 12 is connected to the inner side of the bed leg frame 11. The upper end of the bed leg frame 11 and the other end of the connecting rod 3 are hinged to form a third hinge point III. The third hinge point III of the bed leg frame 11 and the connecting rod 3 is provided with a first deep groove ball bearing 13, which is placed inside the slide 7. The second hinge point II of the outer support arm frame 10 and the connecting rod 3 is provided with a second deep groove ball bearing 14, which is placed inside the slide 12.

[0051] Specifically, the outer support arm frame 10 and the support arm adapter 9 are hinged to form the first hinge point I, which allows relative rotation between the outer support arm frame 10 and the support arm adapter 9. The outer support arm frame 10 and the connecting rod 3 are hinged to form the second hinge point II, which also allows relative rotation between the outer support arm frame 10 and the connecting rod 3. At the same time, the second deep groove ball bearing 14 configured at the second hinge point II can slide up and down inside the slide groove 12 to accommodate the height difference caused by the relative rotation between the outer support arm frame 10 and the connecting rod 3. The bed leg frame 11 and the connecting rod 3 are hinged to form the third hinge point III, which allows relative rotation between the bed leg frame 11 and the connecting rod 3. At the same time, the first deep groove ball bearing 13 configured at the third hinge point III can slide left and right inside the slide rail 7 to accommodate the lateral displacement caused by the lifting and lowering of the bed leg frame 11.

[0052] While performing the rotational action, the second hinge II also performs linear motion along the slide groove 12 through the second deep groove ball bearing 14; the third hinge III also performs linear motion along the slide 7 through the first deep groove ball bearing 13 to adapt to the overall lifting action.

[0053] In this embodiment, there are two sets of first crossbeams 8, which are connected to both ends of the bed frame 6. Each set of first crossbeams 8 is connected to a pair of support arm adapters 9. Each pair of support arm adapters 9 is connected to an outer support arm frame 10. Each outer support arm assembly 2 is connected to a bed leg assembly 5 through a pair of connecting rods 3. The outer side of the bed leg frame 11 is connected to a first leg shaft 22, and a first deep groove ball bearing 13 is connected to the first leg shaft 22.

[0054] Specifically, the two first crossbeams 8 are connected to the two outer support arm frames 10 via two support arm adapters 9. Each outer support arm frame 10 is then connected to a bed leg assembly 5 via a pair of connecting rods 3. That is, the outer support arm assembly 2, connecting rods 3, and bed leg assembly 5 are symmetrically designed with respect to the bed frame assembly 1, thereby achieving end support and lifting of the bed frame assembly 1. Among them, the first support leg shaft 22 serves as the connection between the bed leg frame 11 and the first deep groove ball bearing 13. When the first deep groove ball bearing 13 slides left and right inside the slide rail 7, the first deep groove ball bearing 13 rotates relative to the first support leg shaft 22.

[0055] In this embodiment, the bed frame assembly 1 further includes a second crossbeam 15, the end of which is connected to the inner side of the bed frame 6, and the side of the second crossbeam 15 is connected to a first push rod adapter 16; the outer support arm assembly 2 further includes a third crossbeam 17, which is connected to the inner side of the outer support arm frame 10, and the middle of the third crossbeam 17 is connected to a second push rod adapter 18; a lifting electric push rod 19 is connected between the first push rod adapter 16 and the second push rod adapter 18. There are two sets of first push rod adapters 16, connected to both sides of the second crossbeam 15; a second push rod adapter 18 is connected to the middle of the third crossbeam 17 of each outer support arm assembly 2; there are two sets of lifting electric push rods 19, each connected between each set of first push rod adapters 16 and each set of second push rod adapters 18.

[0056] Specifically, the second crossbeam 15 serves to install the first push rod adapter 16, and the fixed end of the first push rod adapter 16 and the lifting electric push rod 19 are hinged together. The third crossbeam 17 serves to install the second push rod adapter 18, and the driving end of the second push rod adapter 18 and the lifting electric push rod 19 are hinged together. Since the bed leg assembly 5, the outer support arm assembly 2 and the bed leg assembly 5 are symmetrically designed, the lifting electric push rod 19 used in the drive assembly 4 is also provided in two sets. The two sets of lifting electric push rods 19 can directly drive the outer support arm assembly 2, and the outer support arm assembly 2 drives the bed leg assembly 5 to rise or fall.

[0057] In this embodiment, the first crossbeam 8 is connected to a controller mounting plate 20, and the upper end of the controller mounting plate 20 is connected to an electric push rod controller 21. The electric push rod controller 21 is used to control the movement of the lifting electric push rod 19. The outer support arm frame 10 and the third crossbeam 17 are connected in an I-shape. The outer support arm frame 10 is provided with a threaded hole that is hinged to the connecting rod 3. The outer side of the outer support arm frame 10 is connected to a second support leg shaft 23, and the second deep groove ball bearing 14 is connected to the second support leg shaft 23.

[0058] Specifically, the controller mounting plate 20 serves to mount the electric push rod controller 21. The electric push rod controller 21 is electrically connected to the lifting electric push rod 19. A remote control can be configured on the electric push rod controller 21 to control the movement of the lifting electric push rod 19. Since the outer support arm frame 10 and the third crossbeam 17 are I-shaped, they can drive the two bed leg frames 11 arranged side by side on both sides of the outer support arm frame 10. The outer support arm frame 10 and the connecting rod 3 are fixed together by hinge bolts. At the same time, when the second deep groove ball bearing 14 moves in the slide groove 12, the second deep groove ball bearing 14 rotates relative to the second support leg shaft 23.

[0059] See Figure 5In this embodiment, the bed leg assembly 5 also includes a horizontal shaft tube 24 and a caster assembly 25. The horizontal shaft tube 24 is connected to the lower end of the bed leg frame 11. The caster assembly 25 includes a caster mounting seat 26 and a caster body 27. The middle part of the caster mounting seat 26 is connected to the end of the horizontal shaft tube 24, and the caster body 27 is connected to the caster mounting seat 26.

[0060] Specifically, the caster assembly 25 is installed on the left and right sides of the horizontal shaft tube 24 of the bed leg frame 11, and the horizontal shaft tube 24 of the bed leg frame 11 can rotate within the shaft hole of the caster assembly 25. Since one end of the lifting electric push rod 19 is hinged to the bed frame 6 and the other end of the lifting electric push rod 19 is hinged to the outer support arm frame 10, the outer support arm frame 10 can only move downward in an arc within the slide groove 12 on the bed leg frame 11 with the end hinged to the bed frame 6 as the center. Therefore, the bed leg frame 11 is subjected to a backward pulling force. Since the first deep groove ball bearing 13 on the bed leg frame 11 is within the slide rail 7 on the bed frame 6, one end of the bed leg frame 11, with the caster assembly 25 as the center, rises at the end where the first deep groove ball bearing 13 is installed, thereby pushing the bed frame 6 to rise, and vice versa.

[0061] In summary, the present invention comprises a bed frame assembly 1, an outer support arm assembly 2, a connecting rod 3, a drive assembly 4, and a bed leg assembly 5. One end of the outer support arm assembly 2 and the bed frame assembly 1 have a first hinge point I, the other end of the outer support arm assembly 2, the bed leg assembly 5, and one end of the connecting rod 3 have a second hinge point II, and the other end of the connecting rod 3, the bed frame assembly 1, and the bed leg assembly 5 have a third hinge point III. The drive assembly 4 drives one end of the outer support arm assembly 2 to perform an arc motion around the first hinge point I, and the other end of the outer support arm assembly 2 to perform an arc motion around the bottom of the bed leg assembly 5. The bed leg assembly 5 performs a lifting and lowering action at the third hinge point III. The outer support arm frame 10 and the support arm adapter 9 are hinged to form a first hinge point I, allowing relative rotation between them. The outer support arm frame 10 and the connecting rod 3 are hinged to form a second hinge point II, allowing relative rotation between them. Simultaneously, the second deep groove ball bearing 14 at the second hinge point II can slide up and down within the slide groove 12 to accommodate the height difference caused by the relative rotation between the outer support arm frame 10 and the connecting rod 3. The bed leg frame 11 and the connecting rod 3 are hinged to form a third hinge point III, allowing relative rotation between them. Simultaneously, the first deep groove ball bearing 13 at the third hinge point III can slide left and right within the slide rail 7 to accommodate the lateral displacement caused by the lifting and lowering of the bed leg frame 11. This invention allows the bed to be lowered to a minimum height, reducing the overall dimensions of the bed, increasing the amount of cabinet space required, and reducing transportation costs. It also eliminates the displacement of the casters during lifting and lowering, enhancing the stability and safety of the bed structure.

[0062] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0063] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0065] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for vertically lifting a bed, characterized in that, It includes a bed frame assembly (1), an outer support arm assembly (2), a connecting rod (3), a drive assembly (4), and a bed leg assembly (5); One end of the outer support arm assembly (2) and the bed frame assembly (1) have a first hinge (I), the other end of the outer support arm assembly (2), the bed leg assembly (5) and one end of the connecting rod (3) have a second hinge (II), and the other end of the connecting rod (3), the bed frame assembly (1) and the bed leg assembly (5) have a third hinge (III). The drive assembly (4) drives one end of the outer support arm assembly (2) to perform an arc motion at the first hinge (I) as the center, and the other end of the outer support arm assembly (2) to perform an arc motion at the second hinge (II). The bed leg assembly (5) performs an arc motion at the bottom of the bed leg assembly (5) as the center, and the bed leg assembly (5) performs a lifting action at the third hinge (III). The bed frame assembly (1) includes a bed frame (6), a slide rail (7), a first crossbeam (8), and a support arm adapter (9); the slide rail (7) is connected to the inner side of the bed frame (6), the first crossbeam (8) is connected to the end of the bed frame (6), and the support arm adapter (9) is connected to the first crossbeam (8). The outer outrigger assembly (2) includes an outer outrigger frame (10), one end of the outer outrigger frame (10) is hinged to the outrigger adapter (9) to form the first hinge point (I), and the other end of the outer outrigger frame (10) is hinged to one end of the connecting rod (3) to form the second hinge point (II). The bed leg assembly (5) includes a bed leg frame (11) and a slide groove (12). The slide groove (12) is connected to the inner side of the bed leg frame (11). The upper end of the bed leg frame (11) and the other end of the connecting rod (3) are hinged to form the third hinge (III). The third hinge (III) of the bed leg frame (11) and the connecting rod (3) is provided with a first deep groove ball bearing (13), which is placed inside the slide groove (7). The second hinge (II) of the outer support arm frame (10) and the connecting rod (3) is provided with a second deep groove ball bearing (14), which is placed inside the slide groove (12). The second hinge (II) also performs linear motion along the groove (12) via the second deep groove ball bearing (14); The third hinge (III) also performs linear motion along the slide (7) via the first deep groove ball bearing (13); The bed frame assembly (1) also includes a second crossbeam (15), the end of which is connected to the inner side of the bed frame (6), and the side of the second crossbeam (15) is connected to a first push rod adapter (16). The outer boom assembly (2) also includes a third crossbeam (17), which is connected to the inner side of the outer boom frame (10), and a second push rod adapter (18) is connected to the middle of the third crossbeam (17). A lifting electric push rod (19) is connected between the first push rod adapter (16) and the second push rod adapter (18). The bed leg assembly (5) also includes a horizontal shaft tube (24) and a caster assembly (25). The horizontal shaft tube (24) is connected to the lower end of the bed leg frame (11). The caster assembly (25) includes a caster mounting base (26) and a caster body (27). The middle part of the caster mounting base (26) is connected to the end of the horizontal shaft tube (24), and the caster body (27) is connected to the caster mounting base (26).

2. The method for vertically lifting a bed according to claim 1, characterized in that, The drive assembly (4) drives one end of the outer support arm assembly (2) to perform an arc motion downward at the second hinge (II) with the first hinge (I) as the center. The other end of the outer support arm assembly (2) performs an arc motion downward at the second hinge (II). The bed leg assembly (5) performs an arc motion downward with the bottom of the bed leg assembly (5) as the center. The bed leg assembly (5) performs a lifting action at one end of the third hinge (III).

3. The method for vertically lifting a bed according to claim 1, characterized in that, The drive assembly (4) drives one end of the outer support arm assembly (2) to perform an arc motion upward at the first hinge (I) with the other end of the outer support arm assembly (2) at the second hinge (II). The bed leg assembly (5) performs an arc motion upward with the bottom of the bed leg assembly (5) as the center. The bed leg assembly (5) performs a lowering action at one end of the third hinge (III).

4. The method for vertically lifting a bed according to claim 1, characterized in that, There are two sets of the first crossbeams (8), and the two sets of the first crossbeams (8) are connected to both ends of the bed frame (6); Each of the first crossbeams (8) is connected to a pair of the outrigger adapters (9); each pair of outrigger adapters (9) is connected to a set of the outer outrigger frame (10).

5. A method for vertically lifting a bed according to claim 4, characterized in that, Each of the external support arm assemblies (2) is connected to a pair of bed leg assemblies (5) via a pair of the connecting rods (3); The outer side of the bed leg frame (11) is connected to the first leg shaft (22), and the first deep groove ball bearing (13) is connected to the first leg shaft (22).

6. The method for vertically lifting a bed according to claim 1, characterized in that, Two sets of the first push rod adapter (16) are provided, and the two sets of the first push rod adapter (16) are connected to both sides of the second crossbeam (15); a set of the second push rod adapter (18) is connected to the middle of the third crossbeam (17) of each set of the outer support arm assembly (2). The lifting electric push rod (19) is provided in two sets, and each set of the lifting electric push rod (19) is connected between the first push rod adapter (16) and the second push rod adapter (18) of each set.

7. A method for vertically lifting a bed according to claim 1, characterized in that, The first crossbeam (8) is connected to a controller mounting plate (20), and the upper end of the controller mounting plate (20) is connected to an electric push rod controller (21). The electric push rod controller (21) is used to control the movement of the lifting electric push rod (19). The outer support arm frame (10) and the third crossbeam (17) are connected in an I-shape. The outer support arm frame (10) is provided with a threaded hole that is hinged to the connecting rod (3). The outer side of the outer support frame (10) is connected to the second support leg shaft (23), and the second deep groove ball bearing (14) is connected to the second support leg shaft (23).

Images