Multi-posture body position adjusting electric assisted bed

Abstract

The application discloses a multi-posture body position adjusting electric assisted standing bed, which comprises a fixed bed frame, a movable support, a movable bed frame and a driving assembly. The movable bed frame comprises a movable frame body, a backrest support and an intermediate frame body. One end of the movable frame body close to the bed tail is hinged to the movable support. The first electric push rod of the driving assembly is drivingly connected to the rotating frame, and is used for driving the rotating frame to rotate relative to the intermediate frame body, so as to adjust the inclination angle of the backrest support. A limiting piece is fixedly connected to the movable frame body or the intermediate frame body. After the rotating frame is upwardly rotated to abut against the limiting piece, the first electric push rod continues to extend, and the rotating frame drives the movable frame body to upwardly rotate around the hinge point of the movable frame body and the movable support through the limiting piece. The assisted standing bed has the advantages of simple structure, convenient installation, low production cost and good user comfort in the process of assisting standing.

Description

Technical Field

[0001] This application relates to the field of furniture technology, specifically to a multi-posture adjustable electric standing bed. Background Technology

[0002] Electric standing beds, also known as nursing beds, are used by elderly people or patients who have difficulty getting out of bed or whose leg movements are inconvenient. They feature functions such as backrest height adjustment, leg flexion and extension, overall height adjustment, and overall tilting to assist standing, making them popular and widely used in homes, hospitals, and nursing homes. The structure of an electric standing bed includes a fixed bed frame, a movable bed frame rotatably connected to the fixed bed frame, and backrest supports, hip supports, and leg supports that are sequentially rotatably connected along the length of the movable bed frame. Drive motors are connected between the movable bed frame and the fixed bed frame, between the backrest supports and the hip supports, and between the hip supports and the leg supports. Through the extension and retraction of these motors and their coordinated movement, the functions of backrest height adjustment, leg flexion and extension, and assisting standing are achieved.

[0003] Related technologies include electric standing beds, such as the Chinese patent application CN217471576U entitled "Electric Bed with Free Leg Lifting". These beds have a base frame, a support slidably mounted on the base frame, and a bed board rotatably connected to the support. The bed board's legs are hinged to the base frame. A rear electric push rod connects the support and the leg board, driving the support to slide and adjusting the leg board angle. The bed also includes a middle electric push rod for driving the seat to rotate and adjust its angle, and a front electric push rod for driving the backrest to rotate and adjust its angle. The extension and retraction of these three electric push rods adjusts the bed board angle to achieve the function of assisting standing. For example, Chinese patent application CN114028102A, entitled "A Multi-directional Adjustable Convertible Chair Bed," includes a bed frame and a bed board assembly that slides on the bed frame and can move between the head and foot of the bed frame. The bed board assembly and the buttock bed board are rotatably connected via a buttock connector. A first electric push rod on the bed frame is driven by the buttock connector. The first electric telescopic rod has a first stroke and a second stroke. In the first stroke, the first electric telescopic rod drives the bed board assembly to move towards the foot of the bed via the buttock connector. In the second stroke, the extended end of the first electric telescopic rod causes the buttock bed board to tilt upwards via the buttock connector. A second electric telescopic rod is connected between the buttock bed board and the back bed board. The second electric telescopic rod is used to adjust the tilt angle of the back bed board relative to the buttock bed board. A third electric telescopic rod is provided between the thigh bed board and the buttock bed board for adjusting the tilt angle of the thigh bed board. The bed utilizes the telescopic cooperation of the first and second electric push rods to assist the user in standing, and the telescopic movement of the third electric telescopic rod enables the bed to change into various shapes to accommodate different user postures and improve user comfort.

[0004] The electric standing beds mentioned above have the following drawbacks in production and actual use: During the assisted standing process, two electric push rods are usually required to work together. Since each electric push rod is driven by its own independent motor, differences in motor response speed and installation errors of the electric push rods can cause the extension and retraction movements of the two electric push rods to be difficult to achieve complete synchronization, resulting in inherent delays and travel deviations. This causes the backrest support and hip support to rotate unevenly, with short pauses or wobbling, making the user feel uncomfortable. Furthermore, the large number of electric push rods used results in a complex structure, complicated installation, and increased production costs. Summary of the Invention

[0005] This application aims to address or at least partially alleviate the deficiencies of related technologies by providing a multi-posture adjustable electric standing bed that is simple in structure, easy to install, low in production cost, and provides good user comfort during the process of assisting standing.

[0006] The technical solution of this application is to provide a multi-posture adjustable electric standing bed with the following structure: including... A fixed bed frame and a movable support, wherein the movable support is slidably fitted on the fixed bed frame and can reciprocate between the head and foot of the fixed bed frame; A movable bed frame includes a movable frame body and an intermediate frame body fixedly connected to the movable frame body. The end of the movable frame body near the foot of the bed is hinged to the movable support, and the end of the intermediate frame body near the head of the bed is rotatably connected to a backrest support. The drive assembly includes a first electric push rod and a rotating frame. The rotating frame is rotatably connected to the intermediate frame and abuts against the backrest support. One end of the first electric push rod is rotatably connected to the movable support and the other end is rotatably connected to the rotating frame. It is used to drive the rotating frame to rotate relative to the intermediate frame to adjust the tilt angle of the backrest support. The limiting component is fixedly connected to the movable frame or intermediate frame and is positioned opposite to the rotating frame; After the first electric push rod drives the rotating frame to rotate upward until it abuts against the limiting member, the first electric push rod continues to extend, and the rotating frame drives the movable frame to rotate upward around its hinge point with the movable support through the limiting member.

[0007] In some embodiments, the limiting member includes a fixed plate fixedly connected to the movable frame and a limiting post connected to the fixed plate. The rotating frame is provided with an arc-shaped hole, and the limiting post is slidably fitted in the arc-shaped hole. When the rotating frame rotates upward until the end of the arc-shaped hole abuts against the limiting post, the movable frame is driven to rotate through the limiting post.

[0008] In some embodiments, the rotating frame includes two rotating plates that are rotatably connected to the intermediate frame, and a connecting shaft is fixedly connected between the two rotating plates. Each rotating plate is provided with the arc-shaped hole. The two sides of the movable frame are fixedly connected to the limiting members, and the limiting posts of the two limiting members are slidably engaged in the arc-shaped holes of the two rotating plates. A swing arm is fixedly connected to the connecting shaft, and the first electric push rod is rotatably connected to the free end of the swing arm.

[0009] In some embodiments, the backrest bracket is fixedly connected to the rotating frame.

[0010] In some embodiments, the drive assembly further includes a second electric push rod, which is arranged along the length of the fixed bed frame, with one end of the second electric push rod rotatably connected to the fixed bed frame and the other end rotatably connected to the movable support.

[0011] In some embodiments, a leg support is rotatably connected to one end of the intermediate frame near the foot of the bed. The leg support is rotatably connected to the fixed bed frame via a leg connecting rod. When the second electric push rod drives the movable support to slide towards the foot of the bed, the foot end of the leg support is tilted downwards via the leg connecting rod.

[0012] In some embodiments, the leg support includes a thigh support and a lower leg support that are sequentially distributed and rotatably connected along the length of the movable bed frame. The thigh support is rotatably connected to one end of the intermediate frame near the foot of the bed. One end of the leg connecting rod is rotatably connected to the lower leg support, and the other end is rotatably connected to the fixed bed frame. When the second electric push rod drives the movable support to slide towards the foot of the bed, the lower leg support is tilted downward relative to the thigh support by the leg connecting rod.

[0013] In some embodiments, the lower leg support extends out of the movable frame along the length of the movable frame, and a downwardly extending support rod is fixedly connected to the lower leg support. The lower end of the support rod is rotatably connected to the leg connecting rod. The bottom of the leg connecting rod is provided with an abutment portion. When the lower leg support is in a horizontal state, the abutment portion abuts against the fixed bed frame and provides support for the lower leg support through the support rod.

[0014] In some embodiments, the fixed bed frame is provided with a stop, and the bottom of the thigh support is fixedly connected with an inclined brace. The free end of the brace is rotatably connected to a roller that abuts against the stop. The second electric push rod drives the movable support to slide towards the head of the bed, and the thigh support can be rotated relative to the intermediate frame through the brace to adjust the tilt angle.

[0015] In some embodiments, a first elastic element is provided between the intermediate frame and the thigh support, with one end of the first elastic element connected to the intermediate frame and the other end connected to the diagonal brace, so that the thigh support always has a downward rotational tendency.

[0016] In some embodiments, a second elastic member is provided between the movable bed frame and the movable support. One end of the second elastic member is connected to the movable support and the other end is connected to the limiting member. It is used to apply a pre-tightening force to the limiting post, eliminate the gap between the limiting post and the arc-shaped hole, and make the limiting post fit tightly against the inner wall of the arc-shaped hole.

[0017] In some embodiments, the fixed bed frame is provided with a slide rail along its length, and the movable support is connected with a pulley, the pulley slidingly engaging with the slide rail.

[0018] With the above structure, the multi-posture adjustable electric standing bed of this application has the following advantages compared with related technologies: When assisting the user to stand, the movable support slides to the foot of the fixed bed frame, and the first electric push rod extends, thereby driving the rotating frame to rotate relative to the middle frame to adjust the tilt angle of the backrest support; and after the rotating frame rotates upward to abut against the limiting member on the movable bed frame, as the first electric push rod continues to extend, the rotating frame drives the movable frame to rotate upward around its hinge point with the movable support to the assisted standing position through the limiting member. Therefore, this application, through the limiting cooperation of the rotating frame and the limiting member, can sequentially complete the tilt angle adjustment of the backrest support and the assisted standing flipping of the movable bed frame relative to the movable support using only the first electric push rod. Therefore, this multi-posture adjustable electric standing bed does not require multiple electric push rods for coordinated driving, thus simplifying its structure, making it easy to install, and reducing production costs. Since it only requires a single electric push rod for driving, it avoids motion delays and vibrations caused by differences in the response speed of multiple motors and installation errors. This makes the rotation of the backrest support and the movable bed frame smoother and more stable during the assisted standing process, effectively eliminating the feeling of pause or shaking, and significantly improving the user's comfort. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a multi-posture adjustable electric standing bed according to some embodiments of this application.

[0020] Figure 2 This is a schematic diagram of the bottom structure of a multi-posture adjustable electric standing bed according to some embodiments of this application.

[0021] Figure 3 This is a side view of a multi-posture adjustable electric standing bed according to some embodiments of this application.

[0022] Figure 4 This is a cross-sectional structural schematic diagram of a multi-posture adjustable electric standing bed according to some embodiments of this application.

[0023] Figure 5 This is a schematic diagram of the assembly structure of a multi-posture adjustable electric standing bed according to some embodiments of this application.

[0024] Figure 6 This is a schematic diagram of another angle assembly structure of a multi-posture adjustable electric standing bed according to some embodiments of this application.

[0025] Figure 7 This is a structural schematic diagram of the fixed bed frame of a multi-posture adjustable electric standing bed according to some embodiments of this application.

[0026] Figure 8 This is a schematic diagram of the structure of the movable support of a multi-posture adjustable electric standing bed according to some embodiments of this application.

[0027] Figure 9 This is a schematic diagram of the movable bed frame of a multi-posture adjustable electric standing bed according to some embodiments of this application.

[0028] Figure 10 This is a structural schematic diagram of a multi-posture adjustable electric standing bed in a lying position, according to some embodiments of this application.

[0029] Figure 11 This is a schematic diagram of the structure of a multi-posture adjustable electric standing bed in a lying position according to some embodiments of this application.

[0030] Figure 12 This is a cross-sectional structural diagram of a multi-posture adjustable electric standing bed in a lying position according to some embodiments of this application.

[0031] Figure 13 This is a structural diagram of a multi-posture adjustable electric standing bed in an assisted standing position according to some embodiments of this application.

[0032] Figure 14 This is a side view of a multi-posture adjustable electric standing bed in an assisted standing position, according to some embodiments of this application.

[0033] Figure 15 This is a cross-sectional structural diagram of a multi-posture adjustable electric standing bed in an assisted standing position according to some embodiments of this application.

[0034] Figure 16This is a schematic diagram of the backrest support of a multi-posture adjustable electric standing bed in the raised-back state according to some embodiments of this application.

[0035] Figure 17 This is a schematic diagram of the leg support of a multi-posture adjustable electric standing bed in the raised leg position according to some embodiments of this application.

[0036] Explanation of reference numerals in the attached figures: 1. Fixed bed frame; 100. Frame; 101. Slide rail; 102. Stop; 2. Movable support; 200. Pulley; 201. Support lug; 3. Movable bed frame; 300. Movable frame body; 301. Middle frame body; 302. Backrest support; 303. Leg support; 3030. Thigh support; 3031. Lower leg support; 3032. Leg connecting rod; 3033. Support rod; 3034. Diagonal brace; 3035. Roller; 3036. Abutment; 4. Drive assembly; 400. First electric push rod; 401. Rotating frame; 402. Rotating plate; 403. Connecting shaft; 404. Arc-shaped hole; 405. Fixed plate; 406. Limiting post; 407. Swing arm; 408. Second electric push rod. Detailed Implementation

[0037] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0038] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0039] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0041] See Figures 1-15 As shown in the embodiment of this application, a multi-posture adjustable electric standing bed, also known as an electric nursing bed or multi-posture adjustable bed, is disclosed. It has backrest height adjustment, leg height adjustment and assists users to stand up. It is generally used by elderly people or patients who have difficulty getting out of bed or have difficulty moving their legs.

[0042] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the multi-posture adjustable electric standing bed includes a fixed bed frame 1, a movable support 2, a movable bed frame 3, and a drive assembly 4. The movable support 2 slides along the length of the fixed bed frame 1, allowing it to reciprocate between the head and foot of the bed. The movable bed frame 3 includes a movable frame body 300 and an intermediate frame body 301 fixedly connected to the movable frame body 300. The end of the movable frame body 300 near the foot of the bed is hinged to the movable support 2, and the end of the intermediate frame body 301 near the head of the bed is rotatably connected to a backrest support 302. The drive assembly 4 connects the movable support 2 and the backrest support 302, driving the backrest support 302 to rotate and adjust its tilt angle. The drive assembly 4 also drives the movable bed frame 3 to rotate relative to the movable support 2, causing the movable bed frame 3 to be tilted. In this tilted state, the user can be assisted in standing. That is, when the movable bed frame 3 rotates upward to the assisted standing position, the user lying on the movable bed frame 3 is in a tilted position and can easily stand up and get out of bed.

[0043] In this embodiment, see Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the fixed bed frame 1 includes a frame 100 and slide rails 101 mounted on the frame 100. The frame 100 includes a left frame and a right frame constructed from spliced ​​rods, which are connected and fixed by rods. Slide rails 101 are provided on the two opposite side walls of the left and right frames along the length direction, with the openings of the two slide rails 101 facing each other. The movable support 2 is a cuboid structure constructed from spliced ​​rods, and pulleys 200 are rotatably connected to the four corners of the bottom of the movable support 2. The movable support 2 is located between the left and right frames, and the pulleys 200 on both sides of the movable support 2 are slidably connected to the slide rails 101 of the left and right frames, so that the movable support 2 can slide back and forth along the length direction of the fixed bed frame 1.

[0044] See Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the drive assembly 4 includes a first electric push rod 400 and a rotating frame 401. The rotating frame 401 is rotatably connected to the intermediate frame 301 and abuts against the backrest support 302. One end of the first electric push rod 400 is rotatably connected to the movable support 2 and the other end is rotatably connected to the rotating frame 401. The first electric push rod 400 extends and retracts to drive the rotating frame 401 to rotate relative to the intermediate frame 301, so as to adjust the tilt angle of the backrest support 302.

[0045] For example, see Figure 2 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the movable support 2 has supporting lugs 201 fixedly connected to both sides of the end near the foot of the fixed bed frame 1. The movable frame 300 is hinged to the two supporting lugs 201 at the end near the foot of the fixed bed frame 1 by hinge pins, so that the movable frame 300 can rotate circumferentially around the axis of the hinge pins. The intermediate frame 301 is fixedly connected to the middle of the movable frame 300 by fasteners, and a rotating frame 401 is rotatably connected to the end of the intermediate frame 301 near the head of the fixed bed frame 1. A backrest support 302 is fixedly connected to the rotating frame 401. The rotating frame 401 rotates relative to the intermediate frame 301, thereby causing the backrest support 302 to rotate relative to the intermediate frame 301. A connecting seat is fixedly connected to the movable bracket 2. One end of the first electric push rod 400 is rotatably connected to the connecting seat on the movable bracket 2, and the other end is rotatably connected to the rotating frame 401. When the first electric push rod 400 extends or retracts, it can drive the rotating frame 401 to rotate, thereby making the angle of the backrest bracket 302 relative to the intermediate frame 301 adjustable.

[0046] In some embodiments, the backrest support 302 can also be directly hinged to the end of the intermediate frame 301 near the head of the fixed bed frame 1, and the rotating frame 401 is hinged to the end of the intermediate frame 301 near the head of the fixed bed frame 1. The top of the rotating frame 401 abuts against the bottom of the backrest support 302. In this embodiment, there is no need for a fixed connection between the rotating frame 401 and the backrest support 302. The first electric push rod 400 extends and retracts to drive the rotating frame 401 to rotate relative to the intermediate frame 301, thereby driving the backrest support 302 to rotate relative to the intermediate frame 301 to adjust the tilt angle.

[0047] In some embodiments, see Figure 2 , Figure 4 and Figure 6As shown, the rotating frame 401 includes two rotating plates 402, and a connecting shaft 403 is fixedly connected between the two rotating plates 402. The two rotating plates 402 and the connecting shaft 403 together constitute the rotating frame 401 located below the backrest support 302. The two rotating plates 402 are distributed along the width direction of the movable bed frame 3 and are rotatably connected to the end of the intermediate frame 301 near the head of the fixed bed frame 1. A radially extending swing arm 407 is fixedly connected to the connecting shaft 403 of the rotating frame 401. The extended end of the first electric push rod 400 is hinged to the free end of the swing arm 407. The extended end of the first electric push rod 400 extends outward along the axial direction, thereby driving the swing arm 407 to rotate, causing the rotating frame 401 to rotate upward, thereby adjusting the tilt angle of the backrest support 302 relative to the intermediate frame 301.

[0048] In this embodiment, a limiting member is fixedly connected to the movable frame 300 of the multi-posture adjustable electric standing bed, and the limiting member is positioned opposite to the rotating frame 401. After the first electric push rod 400 drives the rotating frame 401 to rotate upward and abut against the limiting member, the first electric push rod 400 continues to extend, and the rotating frame 401 drives the movable frame 300 to rotate upward around its hinge point with the movable support 2 to the auxiliary standing position through the limiting member. That is, the limiting member fixedly connected to the movable frame 300 is set on the rotation path of the rotating frame 401. When the first electric push rod 400 drives the rotating frame 401 to rotate upward relative to the intermediate frame 301 to the limit position, it abuts against the limiting member. As the first electric push rod 400 continues to extend, the rotating frame 401, through the limiting member, links the movable frame 300 to rotate upward, thereby causing the movable frame 300 to rotate upward from a horizontal state to an inclined state, thus placing the movable frame 300 or the movable bed frame 3 in the auxiliary standing position.

[0049] In some embodiments, the limiting member can also be directly fixedly connected to the intermediate frame 301. When the first electric push rod 400 drives the rotating frame 401 to rotate upward relative to the intermediate frame 301 to the limit position, it abuts against the limiting member. As the first electric push rod 400 continues to extend, the rotating frame 401 rotates upward through the limiting member in conjunction with the intermediate frame 301 and the movable frame 300, thereby causing the movable frame 300 to rotate upward from a horizontal state to an inclined state.

[0050] It is easy to understand that the multi-posture adjustable electric standing bed in this embodiment, through the limiting cooperation between the rotating frame 401 and the limiting component, can sequentially complete the tilt angle adjustment of the backrest support 302 and the auxiliary standing flip of the movable bed frame 3 relative to the movable support 2 by only the first electric push rod 400. Therefore, this multi-posture adjustable electric standing bed does not require multiple electric push rods for coordinated driving, thus making its structure simple, easy to install, and low in production cost. At the same time, since only a single electric push rod is required for driving, the motion delay and vibration caused by the difference in response speed of multiple motors and installation errors are avoided, making the rotation of the backrest support 302 and the movable bed frame 3 more smooth and stable during the assisted standing process, effectively eliminating the feeling of pause or shaking, and significantly improving the user's comfort.

[0051] In some embodiments, see Figure 6 and Figure 9 As shown, there are two limiting components, which are respectively set one-to-one with the two rotating plates 402 of the rotating frame 401. Each limiting component includes a fixed plate 405 fixedly connected to the movable frame 300 and a limiting post 406 fixedly connected to the fixed plate 405. Each rotating plate 402 of the rotating frame 401 is provided with an arc-shaped hole 404. The arc-shaped hole 404 is set with the rotation center of the rotating plate 402 as the center. Each limiting post 406 is slidably fitted in the corresponding arc-shaped hole 404. When the rotating frame 401 rotates upward until the end of the arc-shaped hole 404 abuts against the limiting post 406, the rotating plate 402 rotates synchronously with the movable frame 300.

[0052] In this embodiment, the driving end of the first electric push rod 400 extends axially, thereby driving the rotating frame 401 to rotate, causing the backrest support 302 to rotate upward relative to the intermediate frame 301, thus adjusting the tilt angle of the backrest support 302, thereby enabling the multi-posture adjustable electric standing bed to complete the backrest lifting action, that is, to raise the backrest support 302, so that the multi-posture adjustable electric standing bed is in a sitting position, with the user's back resting against the backrest support 302; when an electric push rod drives the rotating frame When the end of the arc-shaped hole 404 on the rotating plate 402 abuts against the limiting post 406 on the movable frame 300, the backrest bracket 302 rotates to its limit position relative to the intermediate frame 301. As the driving end of the first electric push rod 400 continues to extend axially, the rotating plate 402 of the rotating frame 401 drives the movable frame 300 to rotate upward through the limiting post 406, causing the movable frame 300 to be in an inclined state, that is, inclined from the head of the movable bed frame 3 to the foot of the bed and from top to bottom. Until the movable bed frame 3 rotates to the auxiliary standing position, so that the user lying on the movable bed frame 3 can stand up with their feet down, achieving the purpose of assisting standing.

[0053] Further in this embodiment, see Figure 3 , Figure 4 and Figure 5 As shown, the drive assembly 4 also includes a second electric push rod 408, which is arranged along the length of the fixed bed frame 1. One end of the second electric push rod 408 is rotatably connected to the fixed bed frame 1, and the other end is rotatably connected to the movable support 2. The extension and retraction of the second electric push rod 408 drives the movable support 2 to slide relative to the fixed bed frame 1, causing the movable support 2 and the movable bed frame 3 on it to reciprocate between the head and foot of the fixed bed frame 1.

[0054] It is easy to understand that when the multi-posture adjustable electric standing bed assists the user to stand, the drive end of the second electric push rod 408 extends axially, causing the movable support 2 and the movable bed frame 3 on it to move to the end of the fixed bed frame 1.

[0055] In some embodiments, see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 9 As shown, a leg support 303 is rotatably connected to one end of the intermediate frame 301 near the foot of the bed. The leg support 303 is rotatably connected to the fixed bed frame 1 via a leg connecting rod 3032. When the second electric push rod 408 drives the movable support 2 to slide towards the foot of the bed, the foot end of the leg support 303 is tilted downwards via the leg connecting rod 3032. Specifically, in this embodiment, the leg support 303 includes a thigh support 3030 and a lower leg support 3031. The thigh support 3030 and the lower leg support 3031 are distributed sequentially along the length of the movable bed frame 3 and are rotatably connected. The thigh support 3030 is rotatably connected to the end of the intermediate frame 301 near the foot of the bed. There are two leg connecting rods 3032, which are respectively arranged on both sides of the leg support 303. One end of each leg connecting rod 3032 is rotatably connected to the lower leg support 3031, and the other end is rotatably connected to the fixed bed frame 1. When the second electric push rod 408 drives the movable support 2 to slide towards the foot of the bed, the lower leg support 3031 is tilted downward relative to the thigh support 3030 by the leg connecting rods 3032.

[0056] When the multi-posture adjustable electric standing bed assists the user to stand, the driving end of the second electric push rod 408 extends axially, causing the movable support 2 and the movable bed frame 3 on it to slide towards the foot of the fixed bed frame 1. Due to the pulling effect of the leg connecting rod 3032 on the lower leg support 3031, and the rotatable connection between the lower leg support 3031 and the thigh support 3030, the foot end of the lower leg support 3031 rotates downward and tilts. When the first electric push rod 400 drives the movable bed frame 3 to rotate relative to the movable support 2 to the tilted assisted standing position, the foot end of the lower leg support 3031 rotates downward and tilts to facilitate the user getting out of bed and standing.

[0057] It is easy to understand that when the multi-posture adjustable electric standing bed is in a sitting position, the backrest support 302 rotates upward relative to the middle frame 301 to a tilted state. At this time, the user's back can rest on the backrest support 302. If the connection between the lower leg support 3031 and the thigh support 3030 protrudes upward, the backrest support 302, the middle frame 301, the thigh support 3030 and the lower leg support 3031 of the movable bed frame 3 form a more ergonomic angle, making the user more comfortable sitting on the movable bed frame 3. Therefore, in this embodiment, a stop 102 is provided on the fixed bed frame 1, and an inclined brace 3034 is fixedly connected to the bottom of the thigh support 3030. The free end of the brace 3034 is rotatably connected to a roller 3035 that abuts against the stop 102. When the second electric push rod 408 drives the movable support 2 to slide towards the head of the bed, the free end of the brace 3034 is abutted and limited by the stop 102. The brace 3034 drives the thigh support 3030 to rotate relative to the intermediate frame 301, so that the rotating part between the thigh support 3030 and the lower leg support 3031 is raised upward, so that both the thigh support 3030 and the lower leg support 3031 are in an inclined state.

[0058] For example, see Figure 7 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, a vertically arranged stop 102 is fixedly connected to the fixed bed frame 1, and an inclined brace 3034 is fixedly connected to the bottom of the thigh support 3030. The free end of the inclined brace 3034 is rotatably connected to a roller 3035. When the leg support 303 of the movable bed frame 3 is in a horizontal state, the roller 3035 abuts against the stop 102, and the second electric push rod 408 retracts and drives the movable support 2 to move along the length of the fixed bed frame 1 towards the head of the fixed bed frame 1. As the position of the free end of the diagonal brace 3034 is limited by the stop part 102, the diagonal brace 3034 rotates with its free end roller 3035 as the fulcrum as the second electric push rod 408 continues to retract. This causes the thigh support 3030 to rotate upward and the calf support 3031 to rise upward, so that the middle frame 301, the thigh support 3030 and the calf support 3031 form a leg bending angle that is more suitable for the human body in a sitting position, thereby making the user's sitting posture more comfortable.

[0059] It is understandable that the tilt angle adjustment of the leg support 303 of the multi-posture adjustable electric standing bed does not require the addition of an electric push rod. It can be achieved solely by the limiting cooperation between the stop part 102 on the fixed bed frame 1 and the diagonal brace 3034 on the thigh support 3030, as well as the drive of the second electric push rod 408. This makes the structure simple, easy to install, and low in production cost.

[0060] In some embodiments, see Figure 1 , Figure 4 , Figure 6 and Figure 9 As shown, the lower leg support 3031 extends out of the movable frame 300 along its length, thus placing the lower leg support 3031 in a suspended state. This allows the lower leg support 3031 to rotate downwards easily when the multi-posture adjustable electric standing bed assists the user in standing, without interference from the movable frame 300 or the fixed bed frame 1. To ensure good support capacity of the lower leg support 3031 when the movable bed frame 3 is in a horizontal state, in this embodiment, a downwardly extending support rod 3033 is fixedly connected to the lower leg support 3031. The lower end of the support rod 3033 is rotatably connected to the leg connecting rod 3032. The bottom of the leg connecting rod 3032 is provided with an abutment part 3036. When the lower leg support 3031 is in a horizontal state, the abutment part 3036 abuts against the fixed bed frame 1, and the support rod 3033 provides support for the lower leg support 3031. When the movable bed frame 3 is in a horizontal state, the lower leg support 3031 is supported by the leg connecting rod 3032 and the support rod 3033, thereby improving the support capacity of the lower leg support 3031 and making it less likely to rotate downwards due to external forces.

[0061] For example, see Figure 1 , Figure 4 and Figure 9 As shown, vertically downward-facing support rods 3033 are fixedly connected to both sides of the lower leg support 3031. The lower ends of the two support rods 3033 are hinged to the upper ends of the two leg connecting rods 3032. When the lower leg support 3031 is in a horizontal state, the two leg connecting rods 3032 are also in a horizontal state, and the abutment parts 3036 of the two leg connecting rods 3032 abut against the fixed bed frame 1, thereby providing support for the lower leg support 3031 through the support rods 3033.

[0062] In this embodiment, the multi-posture adjustable electric standing bed further includes at least one first elastic element (not shown in the figure) and at least one second elastic element (not shown in the figure). Both the first and second elastic elements are cylindrical helical springs. The first elastic element is disposed between the intermediate frame 301 and the thigh support 3030, with one end connected to the intermediate frame 301 and the other end connected to the diagonal brace 3034, so that the thigh support 3030 always has a downward rotational tendency. During the assisted standing process, when the second electric push rod 408 extends and drives the movable support 2 to slide along the length direction of the fixed bed frame 1 towards the foot of the bed, the first elastic element is stretched and always provides a downward rotational force to the leg support 303, facilitating the downward rotation of the leg support 303. In addition, during the process of the leg support 303 rotating from the raised leg position to the horizontal position, the second electric push rod 408 extends and drives the movable support 2 to slide along the length direction of the fixed bed frame 1 towards the foot of the bed. Under the elastic force of the first elastic element, the thigh support 3030 can be quickly reset to the horizontal position.

[0063] In some embodiments, the first elastic member may be connected at one end to the thigh support 3030 or the calf support 3031 and at the other end to the movable support 2. When the thigh support 3030 rotates upward, the first elastic member is in a stretched state and has elastic potential energy. This elastic potential energy can cause the thigh support 3030 to rotate downward quickly to a horizontal state.

[0064] Furthermore, a second elastic element is disposed between the movable bed frame 3 and the movable support 2, with one end connected to the movable support 2 and the other end connected to the limiting element. This second elastic element applies a pre-tightening force to the limiting post 406, eliminating the gap between the limiting post 406 and the arc-shaped hole 404, ensuring a tight fit between the limiting post 406 and the inner wall of the arc-shaped hole 404. During the process of the first electric push rod 400 driving the movable bed frame 3 to rotate upwards to the auxiliary standing position, the second elastic element is stretched and possesses elastic potential energy. This elastic potential energy ensures that the limiting post 406 and the inner wall of the arc-shaped hole 404 are tightly fitted, preventing a gap between the limiting post 406 and the arc-shaped hole 404 that could cause the movable bed frame 3 to sway in the auxiliary standing position. Additionally, during the resetting process of the movable bed frame 3, it can be quickly reset to a horizontal state.

[0065] See Figure 1 and Figure 4As shown, the multi-posture adjustable electric standing bed is in a lying position. Specifically, the backrest support 302 and leg support 303 of the movable bed frame 3 are both horizontal and horizontally aligned with the middle frame 301 of the movable bed frame 3. At this time, the roller 3035 at the free end of the diagonal support rod 3034 of the thigh support 3030 abuts against the stop part 102 on the fixed bed frame 1. Therefore, in this state, in addition to the self-locking capability of the first electric push rod 400, which keeps the movable support 2 in a fixed position relative to the fixed bed frame 1, the abutment and limiting between the diagonal support rod 3034 at the bottom of the leg support 303 and the stop part 102 on the fixed bed frame 1 also keeps the movable support 2 in a locked position, preventing the movable support 2 from shaking and ensuring good stability during use.

[0066] See further Figure 10 , Figure 11 and Figure 12 As shown, this multi-posture adjustable electric standing bed is in a sitting position. Specifically, driven by the first electric push rod 400, the rotating frame 401 drives the backrest support 302 to rotate upward relative to the middle frame 301, and the backrest support 302 is in an inclined state. The second electric push rod 408 retracts, causing the movable support 2 to move along the length of the fixed bed frame 1 towards the head of the bed. Because the roller 3035 at the free end of the diagonal support rod 3034 of the thigh support 3030 abuts against the stop part 102 on the fixed bed frame 1, the diagonal support rod 3034 rotates with its free end roller 3035 as the fulcrum, driving the thigh support 3030 to rotate upward, and linking it with the lower leg support 3031 to rise upward, so that the middle frame 301, thigh support 3030 and lower leg support 3031 form a leg bending angle that is more suitable for the human body in a sitting position.

[0067] See further Figure 13 , Figure 14 and Figure 15 As shown, this multi-posture adjustable electric standing bed is designed for an assisted standing position. Specifically, in the lying position, the first electric push rod 400 extends and drives the rotating frame 401 to rotate, causing the rotating frame 401 to rotate the backrest support 302 upward relative to the middle frame 301, and the backrest support 302 is in an inclined state. The second electric push rod 408 extends, causing the movable support 2 to move along the length of the fixed bed frame 1 towards the foot of the bed. Under the action of the leg connecting rod 3032, the lower leg support 3031 rotates downward to an inclined state. When the first electric push rod 400 drives the rotating frame 401 to rotate until the end of the arc-shaped hole 404 on the rotating plate 402 abuts against the limiting post 406 on the movable frame 300, the limiting post 406 drives the movable frame 300 to rotate upward around its hinge point with the movable support 2 to an assisted standing position. At this time, it is convenient for the user lying on the movable bed frame 3 to stand up with both feet on the ground.

[0068] See Figure 16 As shown, the multi-posture adjustable electric standing bed is in the backrest position. Specifically, in the lying position, the first electric push rod 400 extends and drives the rotating frame 401 to rotate, so that the rotating frame 401 drives the backrest support 302 to rotate upward relative to the intermediate frame 301. The backrest support 302 is in the tilted backrest position, which can lift the user's back upward.

[0069] See further Figure 12 and Figure 17 As shown, the multi-posture adjustable electric standing bed is in the leg-raising state. Specifically, in the lying position, the second electric push rod 408 retracts, causing the movable support 2 to move along the length of the fixed bed frame 1 towards the head of the bed. Because the roller 3035 at the free end of the diagonal support rod 3034 of the thigh support 3030 abuts against the stop part 102 on the fixed bed frame 1, the diagonal support rod 3034 rotates with its free end roller 3035 as the fulcrum, driving the thigh support 3030 to rotate upward, and linking it with the lower leg support 3031 to rise upward, thereby causing the user's legs to bend upward, so as to achieve the purpose of raising the legs.

[0070] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0071] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "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 this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0072] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A multi-posture adjustable electric standing bed, characterized in that: include A fixed bed frame and a movable support, wherein the movable support is slidably fitted on the fixed bed frame and can reciprocate between the head and foot of the fixed bed frame; A movable bed frame includes a movable frame body and an intermediate frame body fixedly connected to the movable frame body. The end of the movable frame body near the foot of the bed is hinged to the movable support, and the end of the intermediate frame body near the head of the bed is rotatably connected to a backrest support. The drive assembly includes a first electric push rod and a rotating frame. The rotating frame is rotatably connected to the intermediate frame and abuts against the backrest support. One end of the first electric push rod is rotatably connected to the movable support and the other end is rotatably connected to the rotating frame. It is used to drive the rotating frame to rotate relative to the intermediate frame to adjust the tilt angle of the backrest support. The limiting component is fixedly connected to the movable frame or intermediate frame and is positioned opposite to the rotating frame; After the first electric push rod drives the rotating frame to rotate upward until it abuts against the limiting member, the first electric push rod continues to extend, and the rotating frame drives the movable frame to rotate upward around its hinge point with the movable support through the limiting member.

2. The multi-posture adjustable electric standing bed according to claim 1, characterized in that: The limiting component includes a fixed plate fixedly connected to the movable frame and a limiting post connected to the fixed plate. The rotating frame is provided with an arc-shaped hole, and the limiting post is slidably fitted in the arc-shaped hole. When the rotating frame rotates upward until the end of the arc-shaped hole abuts against the limiting post, the movable frame is driven to rotate through the limiting post.

3. The multi-posture adjustable electric standing bed according to claim 2, characterized in that: The rotating frame includes two rotating plates that are rotatably connected to the intermediate frame, and a connecting shaft is fixedly connected between the two rotating plates. Each rotating plate is provided with an arc-shaped hole. The two sides of the movable frame are fixedly connected to the limiting members, and the limiting posts of the two limiting members are slidably engaged in the arc-shaped holes of the two rotating plates. A swing arm is fixedly connected to the connecting shaft, and the first electric push rod is rotatably connected to the free end of the swing arm.

4. The multi-posture adjustable electric standing bed according to claim 1, characterized in that: The drive assembly further includes a second electric push rod, which is arranged along the length of the fixed bed frame, with one end of the second electric push rod rotatably connected to the fixed bed frame and the other end rotatably connected to the movable bracket.

5. The multi-posture adjustable electric standing bed according to claim 4, characterized in that: The middle frame is rotatably connected to a leg support at one end near the foot of the bed. The leg support is rotatably connected to the fixed bed frame via a leg connecting rod. When the second electric push rod drives the movable support to slide towards the foot of the bed, the foot end of the leg support is tilted downwards via the leg connecting rod.

6. The multi-posture adjustable electric standing bed according to claim 5, characterized in that: The leg support includes a thigh support and a lower leg support that are sequentially distributed and rotatably connected along the length of the movable bed frame. The thigh support is rotatably connected to one end of the intermediate frame near the foot of the bed. One end of the leg connecting rod is rotatably connected to the lower leg support, and the other end is rotatably connected to the fixed bed frame. When the second electric push rod drives the movable support to slide towards the foot of the bed, the lower leg support is tilted downward relative to the thigh support by the leg connecting rod.

7. The multi-posture adjustable electric standing bed according to claim 6, characterized in that: A downwardly extending support rod is fixedly connected to the lower leg support, and the lower end of the support rod is rotatably connected to the leg connecting rod. The bottom of the leg connecting rod is provided with an abutment part. When the lower leg support is in a horizontal state, the abutment part abuts against the fixed bed frame and provides support for the lower leg support through the support rod.

8. The multi-posture adjustable electric standing bed according to claim 6, characterized in that: The fixed bed frame is provided with a stop, and the bottom of the thigh support is fixedly connected with an inclined brace. The free end of the brace is rotatably connected to a roller opposite to the stop. The second electric push rod drives the movable support to slide towards the head of the bed until the roller abuts against the stop. The thigh support can be rotated relative to the intermediate frame through the brace to adjust the tilt angle.

9. The multi-posture adjustable electric standing bed according to claim 8, characterized in that: A first elastic element is provided between the intermediate frame and the thigh support. One end of the first elastic element is connected to the intermediate frame and the other end is connected to the diagonal brace, so that the thigh support always has a downward rotational tendency.

10. The multi-posture adjustable electric standing bed according to claim 2, characterized in that: A second elastic element is provided between the movable bed frame and the movable support. One end of the second elastic element is connected to the movable support and the other end is connected to the limiting element. It is used to apply a pre-tightening force to the limiting post, eliminate the gap between the limiting post and the arc-shaped hole, and make the limiting post fit tightly against the inner wall of the arc-shaped hole.

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