A nursing bed with a side rail swing space extension linked with turning over

Abstract

The application discloses a nursing bed with a lateral swing space extension function of a guardrail linkage with a turning-over function, and belongs to the field of nursing beds. The nursing bed with a lateral swing space extension function of a guardrail linkage with a turning-over function comprises a bed frame, a mattress support assembly, a turning-over mechanism and a guardrail mechanism. The guardrail mechanism is designed in a parallelogram mechanism, and forms a guardrail which can be swung and unfolded or folded. The turning-over mechanism and the guardrail mechanisms on both sides are connected through a linkage mechanism. When the turning-over mechanism drives the mattress support assembly to move to one side, the guardrail mechanism on the same side is swung and unfolded. When the turning-over mechanism drives the mattress support assembly to move to the other side, the guardrail mechanism on the opposite side remains folded on the side of the bed frame. In this way, the unfolding of the guardrail can realize the space extension of the nursing bed to the turning-over side, increase the space of the turning-over side of the nursing bed, improve the turning-over safety and comfort of the patient, and avoid the secondary injury of the patient during the turning-over process. In addition, the guardrail mechanism and the linkage mechanism are simple, compact, stable and reliable in movement.

Description

Technical Field

[0001] This invention relates to a patient care bed, and more specifically, to a nursing bed with a lateral swing-out space extension guardrail that is linked to turning over. Background Technology

[0002] With the accelerating aging of the population, the number of patients requiring long-term bed rest for treatment and rehabilitation is increasing. To meet the rehabilitation needs of these patients, multifunctional nursing beds have emerged. Currently, functions such as back lifting, leg flexion, and turning over have become standard features of nursing beds, improving patient comfort and ease of care.

[0003] For turning beds, the common method is to use the bed surface to rotate to facilitate patient turning. Most turning mechanisms use a rotation of one-half or one-third of the bed surface to move the patient to the side. A one-half design divides the bed surface into two parts, left and right, using one side to rotate upwards to push the patient to the other side. The rotation point is in the middle of the bed, which is less effective and comfortable for patients lying in the middle. A one-third design divides the bed surface into three parts (left, center, and right), generally using rotation of the left and right sides. Since patients often lie in the middle, and the middle part of the bed doesn't move during turning, it can be uncomfortable. Often, medical staff and family members need to move the patient outwards to assist with turning, but this method doesn't provide a satisfactory turning effect in practice.

[0004] However, regardless of the type of bed tilting structure, when a patient turns over, the patient is always pushed to one side of the bed instead of being in the middle. This results in very little space on the side the patient is turning over, which can cause a feeling of oppression, reduce the patient's comfort when turning over, and even cause crushing injuries to the patient if they hit the guardrail. Summary of the Invention

[0005] 1. The technical problem that the invention aims to solve

[0006] The purpose of this invention is to overcome the aforementioned shortcomings of existing nursing beds and provide a nursing bed with a lateral swing-out space extension guardrail linked to turning. The technical solution of this invention employs a parallelogram mechanism to form a guardrail that can be tilted, unfolded, or folded. The turning mechanism and the guardrail mechanisms on both sides are connected by a linkage mechanism. When the turning mechanism moves the mattress support assembly to one side, it causes the guardrail mechanism on the same side to swing outward and unfold. When the turning mechanism moves the mattress support assembly to the other side, the guardrail mechanism on the opposite side remains folded at the side of the bed frame. This allows the nursing bed to extend to the turning side space through the unfolding of the guardrail, increasing the space on that side, improving the patient's sense of security and comfort during turning, and avoiding secondary injury to the patient during the turning process. Furthermore, the guardrail mechanism and linkage mechanism have a simple and compact structure, and stable and reliable movement.

[0007] 2. Technical Solution

[0008] To achieve the above objectives, the technical solution provided by this invention is as follows:

[0009] The present invention discloses a lateral swing space extension nursing bed with a guardrail linked to turning over, comprising a bed frame, a mattress support assembly, a turning mechanism, and a guardrail mechanism. The mattress support assembly is disposed on the bed frame, and the turning mechanism is disposed on the bed frame and located below the mattress support assembly, for driving the mattress support assembly to turn laterally in the left and right directions; the guardrail mechanism is installed on the left and right sides of the bed frame.

[0010] The turning mechanism and the guardrail mechanisms on both sides are connected by a linkage mechanism; wherein,

[0011] The guardrail mechanism includes a guardrail body, a fixed connecting rod, a movable connecting rod, an intermediate connecting rod, and a return spring. The fixed connecting rod is horizontally fixed to the side of the bed frame. The movable connecting rod is connected to the fixed connecting rod through at least two intermediate connecting rods. The movable connecting rod and the fixed connecting rod form a parallelogram mechanism that can unfold outward or fold inward through the intermediate connecting rod. The guardrail body is mounted on the movable connecting rod. The return spring is located between the fixed connecting rod and the movable connecting rod to keep the guardrail body folding inward.

[0012] The linkage mechanism includes a direction conversion linkage assembly and a guardrail control assembly. The direction conversion linkage assembly consists of multiple sets of slider linkage mechanisms, which are used to convert the turning and swaying motion on the front and rear cross sections of the nursing bed into linear motion on the horizontal planes on both sides of the nursing bed. The guardrail control assembly is connected to the direction conversion linkage assembly and the guardrail mechanism respectively. When the turning mechanism drives the mattress support assembly to turn to one side, it drives the guardrail mechanism on the same side to swing outward and unfold. When the turning mechanism drives the mattress support assembly to turn to the other side, it keeps the guardrail mechanism on the opposite side folded on the side of the bed frame.

[0013] Furthermore, the turning mechanism includes a turning electric push rod, a turning swing arm, a turning support rod, a push-top connecting rod, a bracket hinge seat, and a turning shaft. The turning shaft is rotatably mounted in the middle of the bed frame in the front-back direction. One end of the turning electric push rod is hinged to the bed frame, and the other end is hinged to the turning swing arm fixed on the turning shaft. There is one turning support rod on each side of the turning shaft, and the ends of the two turning support rods near the middle of the nursing bed are rotatably connected relative to the bed frame. The other ends of the turning support rods are respectively hinged to the corresponding side of the mattress support assembly through the push-top connecting rod. An eccentric push plate is also fixed on the turning shaft below the turning support rod. When the turning electric push rod drives the turning shaft to rotate to one side, the eccentric push plate sways and pushes the turning support rod on the corresponding side to move upward, thereby driving the mattress support assembly to turn to the opposite side through the corresponding push-top connecting rod.

[0014] Furthermore, the mattress support assembly includes a central support frame and side support frames hinged to the left and right sides of the central support frame. A connecting plate is hinged to the outer end of the side support frame, and a slider is provided on the connecting plate. The slider is slidably mounted on a guide rod, which is horizontally installed on the bed frame along the width direction of the nursing bed. A return spring is also sleeved on the guide rod, which is compressed against the slider on the corresponding side.

[0015] Furthermore, the outer end of the side support frame is also provided with a turning roller that can roll laterally on the bed frame.

[0016] Furthermore, the direction conversion linkage assembly of the linkage mechanism includes a linkage arm, a first linkage rod, a first linkage slider, a second linkage rod, a second linkage slider, a third linkage rod, and a third linkage slider. The linkage arm is fixed on the turning shaft, and the free end of the linkage arm is hinged to one end of each of the two first linkage rods. A linkage bracket is provided at the bottom of the bed frame. Two first linkage sliders are slidably mounted on the crossbeam of the linkage bracket. The two first linkage rods are respectively hinged to the first linkage sliders on their respective sides. Second linkage rods are hinged to the two first linkage sliders. Longitudinal beams are provided at both ends of the crossbeam of the linkage bracket. A second linkage slider is slidably mounted on each of the longitudinal beams on both sides. The other end of each second linkage rod is hinged to the second linkage slider on its respective side. A third linkage rod is hinged to each of the two second linkage sliders. A third linkage slider is slidably mounted horizontally on each side of the bed frame. The other end of each third linkage rod has a waist-shaped groove, and the third linkage rod slides into the corresponding third linkage slider through the waist-shaped groove. The third linkage sliders are respectively connected to the guardrail mechanism on their respective sides via a guardrail control assembly.

[0017] Furthermore, the guardrail control component of the linkage mechanism is a rack and pinion mechanism, including a transmission rack and a gear. The transmission rack is horizontally fixed on the corresponding third linkage slider, and the gear is fixed on the rotating shaft of one of the intermediate connecting rods. The transmission rack meshes with the gear.

[0018] Furthermore, the guardrail control component of the linkage mechanism is a linkage assembly, including a push-pull linkage, a swing linkage, and a guardrail linkage. The push-pull linkage, the swing linkage, and the guardrail linkage are all horizontally arranged. One end of the push-pull linkage is hinged to the third linkage slider, one end of the swing linkage is hinged to the side of the bed frame, the other end of the push-pull linkage is hinged to the middle of the swing linkage, the other end of the swing linkage is hinged to the guardrail linkage, and the other end of the guardrail linkage is hinged to the movable connecting rod on the corresponding side.

[0019] Furthermore, it also includes a backrest lifting mechanism, which comprises a backrest lifting and flipping frame, a backrest lifting pivot, and a backrest lifting electric push rod. The backrest lifting and flipping frame is fixed on the backrest lifting pivot, and both ends of the backrest lifting pivot are rotatably mounted on the bed frame. One end of the backrest lifting electric push rod is hinged to the bed frame, and the other end is hinged to a backrest lifting arm on the backrest lifting pivot. The mattress support assembly also has a back support and a hip support hinged together. The backrest lifting and flipping frame is located below the back support, and the lower side of the back support also has a backrest support roller that can roll relative to the backrest lifting and flipping frame.

[0020] Furthermore, it also includes a leg-bending mechanism, which comprises a first leg-bending bracket, a second leg-bending bracket, a leg-bending connecting rod, and a leg-bending electric push rod. One end of the first leg-bending bracket is hinged to the rear end of the bed frame, and the other end of the first leg-bending bracket is hinged to the second leg-bending bracket. One end of the leg-bending connecting rod is hinged to the rear end of the bed frame, and the other end is hinged to the lower part of the second leg-bending bracket. The first leg-bending bracket, the second leg-bending bracket, and the leg-bending connecting rod form a parallel four-bar linkage at the rear end of the bed frame. One end of the leg-bending electric push rod is hinged to the lower part of the bed frame, and the other end is hinged to the leg-bending connecting rod. The leg-bending electric push rod drives the second leg-bending bracket to move horizontally up and down.

[0021] Furthermore, the lower part of the bed frame is provided with a bottom frame, the bottom frame is provided with casters, and the front and rear ends of the bed frame are respectively provided with bed end panels.

[0022] 3. Beneficial effects

[0023] Compared with existing known technologies, the technical solution provided by this invention has the following significant advantages:

[0024] (1) The present invention provides a nursing bed with a side swing space extension mechanism that is linked to turning over. It includes a bed frame, a mattress support assembly, a turning mechanism, and a guardrail mechanism. The guardrail mechanism adopts a parallelogram mechanism design to form a guardrail that can be tilted, unfolded, or folded. The turning mechanism is connected to the guardrail mechanisms on both sides through a linkage mechanism. When the turning mechanism drives the mattress support assembly to turn over to one side, it drives the guardrail mechanism on the same side to swing outward and unfold. When the turning mechanism drives the mattress support assembly to turn over to the other side, the guardrail mechanism on the opposite side remains folded on the side of the bed frame. In this way, the nursing bed can be extended to the turning side space by unfolding the guardrail, increasing the space on the turning side of the nursing bed, improving the patient's sense of security and comfort when turning over, and avoiding secondary injury to the patient during the turning process. In addition, the guardrail mechanism and linkage mechanism have a simple and compact structure and stable and reliable movement.

[0025] (2) The present invention provides a side swing space extension nursing bed with a guardrail linked to turning over. Its turning mechanism includes a turning electric push rod, a turning swing arm, a turning support rod, a push rod, a bracket hinge seat and a turning shaft. The left and right turning of the mattress support component can be stably controlled by a single turning electric push rod. The structure is simple and compact, occupies little space, and the turning movement is stable and reliable. The turning comfort of the middle bed board is also better.

[0026] (3) The present invention provides a side swing space extension nursing bed with a guardrail that is linked to turning over. The mattress support assembly includes a middle support frame and side support frames hinged to the left and right sides of the middle support frame. A connecting plate is hinged to the outer end of the side support frame. A slider is provided on the connecting plate. The slider is slidably mounted on a guide rod. The guide rod is horizontally mounted on the bed frame along the width direction of the nursing bed. A return spring is also sleeved on the guide rod and compressed against the slider on the corresponding side. With this design, the outer end of the side support frame can slide horizontally relative to the guide rod during the turning over movement, which ensures the overall stability of the mattress support assembly and improves the safety of use.

[0027] (4) The present invention provides a side swing space extension nursing bed with a guardrail that is linked to turning over. The outer end of the side support frame is also provided with a turning roller that can roll laterally on the bed frame, which can reduce the friction and noise between the side support frame and the bed frame during the turning over movement.

[0028] (5) The present invention provides a nursing bed with a side swing space extension that is linked to the turning mechanism. The direction conversion linkage assembly of the linkage mechanism includes a linkage arm, a first linkage rod, a first linkage slider, a second linkage rod, a second linkage slider, a third linkage rod, and a third linkage slider. Through multiple sets of slider linkages, the turning and swinging motion on the front and rear cross sections of the nursing bed is converted into linear motion on the horizontal planes on both sides of the nursing bed. The structure is simple and ingenious, and easy to install on the nursing bed. Furthermore, by utilizing the waist-shaped groove on the third linkage rod, it can cooperate with the turning mechanism to provide a stable coordination between the turning action and the swinging and unfolding action of the guardrail, making the linkage action of the two more stable.

[0029] (6) The present invention provides a nursing bed with a side swing space extension that is linked to turning over. Its linkage mechanism can be a gear and rack mechanism or a linkage assembly. The gear and rack mechanism or linkage assembly has a simple and compact structure, stable and reliable transmission, and occupies little space.

[0030] (7) A side swing space extension nursing bed with a guardrail linked to turning over, wherein the back lifting mechanism includes a back lifting and turning frame, a back lifting pivot and a back lifting electric push rod. The back lifting and turning frame is located below the back support. The back support also has a back lifting support roller that can roll relative to the back lifting and turning frame. The back lifting action is stable and reliable, and the friction and noise generated by the back lifting action are small.

[0031] (8) A lateral swing space extension nursing bed with a guardrail linked to turning over, the present invention has a leg flexion mechanism including a first leg flexion bracket, a second leg flexion bracket, a leg flexion link and a leg flexion electric push rod. One end of the first leg flexion bracket is hinged to the rear end of the bed frame, and the other end of the first leg flexion bracket is hinged to the second leg flexion bracket. One end of the leg flexion link is hinged to the rear end of the bed frame and the other end is hinged to the lower part of the second leg flexion bracket. The first leg flexion bracket, the second leg flexion bracket and the leg flexion link form a parallel four-bar linkage at the rear end of the bed frame. One end of the leg flexion electric push rod is hinged to the lower part of the bed frame and the other end is hinged to the leg flexion link. The second leg flexion bracket is moved horizontally up and down by the leg flexion electric push rod. The leg flexion mechanism has a large range of motion, which can make the patient's legs lift up, bend down or lie flat, and the second leg flexion bracket always remains horizontal, which can make the patient maintain a sitting posture and facilitate washing the patient's feet, etc. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of a nursing bed with a lateral swing space extension guardrail that is linked to turning over, according to Embodiment 1 of the present invention.

[0033] Figure 2 This is a front view schematic diagram of a nursing bed with a lateral swing space extension guardrail that is linked to turning over, according to Embodiment 1 of the present invention.

[0034] Figure 3This is a schematic diagram of the bottom structure of a nursing bed with a lateral swing space extension guardrail that is linked to turning over, according to Embodiment 1 of the present invention.

[0035] Figure 4 This is a schematic diagram of the linkage structure between the turning mechanism and the guardrail mechanism in Embodiment 1 of the present invention;

[0036] Figure 5 This is a three-dimensional schematic diagram of the back-lifting state of a nursing bed with a side-swinging space extension guardrail that is linked to turning over, according to Embodiment 1 of the present invention.

[0037] Figure 6 This is a schematic diagram of the supine state of a nursing bed with a guardrail that swings laterally in conjunction with turning over, according to the present invention.

[0038] Figure 7 This is a schematic diagram of the downward flexed leg state of a nursing bed with a guardrail that is linked to turning over, according to the present invention.

[0039] Figure 8 This is a three-dimensional structural diagram of a nursing bed with a lateral swing space extension guardrail that is linked to turning over, according to Embodiment 2 of the present invention.

[0040] Figure 9 This is a front view schematic diagram of a nursing bed with a lateral swing space extension guardrail that is linked to turning over, according to Embodiment 2 of the present invention.

[0041] Figure 10 This is a schematic diagram of the bottom structure of a nursing bed with a lateral swing space extension guardrail that is linked to turning over, according to Embodiment 2 of the present invention.

[0042] Figure 11 This is a schematic diagram of the linkage structure between the turning mechanism and the guardrail mechanism in Embodiment 2 of the present invention.

[0043] Explanation of the labels in the diagram:

[0044] 1. Bed frame; 1-1. Base frame; 1-2. Casters; 1-3. Linkage bracket;

[0045] 2. Mattress support components; 2-1. Central support frame; 2-1a. Back center support; 2-1b. Hip center support; 2-2. Side support frame; 2-2a. Back side support; 2-2b. Hip side support; 2-3. Back support roller; 2-4. Turning roller;

[0046] 3. Turning mechanism; 3-1. Turning electric push rod; 3-2. Turning swing arm; 3-3. Turning support rod; 3-4. Push connecting rod; 3-5. Bracket hinge seat; 3-6. Guide rod; 3-7. Slider; 3-8. Connecting plate; 3-9. Return spring; 3-10. Turning pivot; 3-10a. Eccentric push plate;

[0047] 4. Guardrail mechanism; 4-1. Guardrail body; 4-2. Fixed connecting rod; 4-3. Movable connecting rod; 4-4. Intermediate connecting rod; 4-5. Return spring;

[0048] 5. Linkage Mechanism; 5-1. Linkage Swing Arm; 5-2. First Linkage Rod; 5-3. First Linkage Slider; 5-4. Second Linkage Rod; 5-5. Second Linkage Slider; 5-6. Third Linkage Rod; 5-6a. Waist-shaped Groove; 5-7. Third Linkage Slider; 5-8. Transmission Rack; 5-9. Gear; 5-10. Linkage Assembly; 5-10a. Push-Pull Linkage; 5-10b. Swing Linkage; 5-10c. Guardrail Linkage;

[0049] 6. Backrest lifting mechanism; 6-1. Backrest lifting and tilting frame; 6-2. Backrest lifting pivot; 6-2a. Backrest lifting swing arm; 6-3. Backrest lifting electric push rod;

[0050] 7. Leg bending mechanism; 7-1. First leg bending support; 7-2. Second leg bending support; 7-2a. First hinge seat; 7-3. Leg bending linkage; 7-3a. Second hinge seat; 7-4. Leg bending electric push rod;

[0051] 8. Bed end guardrail. Detailed Implementation

[0052] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings.

[0053] [Example 1]

[0054] Combination Figures 1 to 4 As shown, this embodiment of a nursing bed with a lateral swing-integrated guardrail that is linked to the turning mechanism includes a bed frame 1, a mattress support assembly 2, a turning mechanism 3, and a guardrail mechanism 4. The mattress support assembly 2 is mounted on the bed frame 1, and the turning mechanism 3 is mounted on the bed frame 1 and located below the mattress support assembly 2, used to drive the mattress support assembly 2 to turn laterally in the left and right directions. The guardrail mechanisms 4 are installed on the left and right sides of the bed frame 1. The turning mechanism 3 and the guardrail mechanisms 4 on both sides are connected by a linkage mechanism 5 to realize that the guardrail mechanisms 4 can expand or retract with the movement of the turning mechanism 3.

[0055] The guardrail mechanism 4 includes a guardrail body 4-1, a fixed connecting rod 4-2, a movable connecting rod 4-3, an intermediate connecting rod 4-4, and a return spring 4-5. The fixed connecting rod 4-2 is horizontally fixed to the side of the bed frame 1. The movable connecting rod 4-3 is connected to the fixed connecting rod 4-2 through at least two intermediate connecting rods 4-4. The movable connecting rod 4-3 and the fixed connecting rod 4-2 form a parallelogram mechanism that can unfold outward or fold inward through the intermediate connecting rods 4-4. The guardrail body 4-1 is mounted on the movable connecting rod 4-3, so that the guardrail body 4-1 can move relative to the bed frame 1 in a translating unfolding and retraction motion. The return spring 4-5 is located between the fixed connecting rod 4-2 and the movable connecting rod 4-3 to keep the guardrail body 4-1 folding inward. That is, when the nursing bed is not turned over, the guardrail body 4-1 can always remain in a retracted state, ensuring the overall compactness of the nursing bed.

[0056] The linkage mechanism 5 includes a direction conversion linkage assembly and a guardrail control assembly. The direction conversion linkage assembly consists of multiple sets of slider linkage mechanisms, used to convert the turning and swaying motion on the front and rear cross sections of the nursing bed into linear motion on the horizontal planes on both sides of the nursing bed, thereby realizing the extension motion of the guardrail caused by the turning action. The guardrail control assembly is connected to both the direction conversion linkage assembly and the guardrail mechanism 4. When the turning mechanism 3 moves the mattress support assembly 2 to one side, it causes the guardrail mechanism 4 on the same side to swing outward and unfold. When the turning mechanism 3 moves the mattress support assembly 2 to the other side, it keeps the guardrail mechanism 4 on the opposite side folded on the side of the bed frame 1. That is, the guardrail mechanism 4 unfolds to the side the turning mechanism 3 moves to, while the guardrail mechanism 4 on the other side remains folded.

[0057] The aforementioned nursing bed design utilizes a parallelogram mechanism to form a swingable, unfoldable, or foldable guardrail. The turning mechanism is connected to the guardrail mechanisms on both sides via a linkage mechanism. When the turning mechanism moves the mattress support assembly to one side, it causes the guardrail mechanism on the same side to swing outward and unfold. Conversely, when the turning mechanism moves the mattress support assembly to the other side, the guardrail mechanism on the opposite side remains folded at the side of the bed frame. This allows the nursing bed to extend into the space on the turning side by unfolding the guardrail, increasing the space available for the patient and improving their safety and comfort during turning, while preventing secondary injuries during the process. Furthermore, the guardrail mechanism and linkage mechanism are simple, compact, and operate stably and reliably.

[0058] Reference Figures 2 to 4As shown, in this embodiment, the aforementioned turning mechanism 3 includes a turning electric push rod 3-1, a turning swing arm 3-2, a turning support rod 3-3, a push connecting rod 3-4, a bracket hinge seat 3-5, and a turning rotating shaft 3-10. The turning rotating shaft 3-10 is rotatably disposed in the middle of the bed frame 1 in the front-back direction. One end of the turning electric push rod 3-1 is hinged to the bed frame 1, and the other end is hinged to the turning swing arm 3-2 fixed on the turning rotating shaft 3-10. The turning rotating shaft 3-10 is driven to rotate by the extension and retraction movement of the turning electric push rod 3-1. The turning support rod 3-3 is located on the left and right sides of the turning rotating shaft 3-10. Each bed has one turning support rod 3-3, with one end of each rod 3-3 rotatably connected relative to the bed frame 1 near the middle of the bed frame. The other ends of the turning support rods 3-3 are hinged to the corresponding sides of the mattress support assembly 2 via push-up connecting rods 3-4. An eccentric push plate 3-10a is fixed on the turning shaft 3-10, located below the turning support rods 3-3. When the turning electric push rod 3-1 drives the turning shaft 3-10 to rotate to one side, the eccentric push plate 3-10a swings and pushes the turning support rod 3-3 on the corresponding side to move upward, which in turn drives the mattress support assembly 2 to turn to the opposite side via the corresponding push-up connecting rod 3-4. The turning mechanism 3 uses only one turning electric push rod 3-1 to stably control the left and right turning of the mattress support assembly 2. The structure is simple and compact, occupies little space, and the turning movement is stable and reliable. Specifically, the turning support rod 3-3 can be rotatably mounted coaxially on the turning shaft 3-10, and the eccentric push plate 3-10a is fixed on the turning shaft 3-10. When turning to one side, the turning shaft 3-10 rotates, causing the eccentric push plate 3-10a to rotate. The eccentric push plate 3-10a pushes the corresponding turning support rod 3-3 upward, and the turning support rod 3-3 pushes the corresponding mattress support component 2 through the push rod 3-4, thereby realizing the side-turning movement of the mattress support component 2. At this time, the turning support rod 3-3 on the other side is in a free state, so the mattress support component 2 on the other side is in a horizontal state. Conversely, when turning to the other side, the eccentric push plate 3-10a pushes the turning support rod 3-3 on the other side. The turning support rod 3-3 on the side that has been raised loses the pushing force of the eccentric push plate 3-10a and returns to a horizontal state under the action of the mattress support component 2 and the patient's weight.

[0059] Reference Figure 2 and Figure 3As shown, in this embodiment, the mattress support assembly 2 includes a central support frame 2-1 and side support frames 2-2 hinged to the left and right sides of the central support frame 2-1. A connecting plate 3-8 is hinged to the outer end of the side support frame 2-2. A slider 3-7 is provided on the connecting plate 3-8 and slidably mounted on a guide rod 3-6. The guide rod 3-6 is horizontally mounted on the bed frame 1 along the width of the nursing bed. A return spring 3-9 is also sleeved on the guide rod 3-6, compressing and abutting against the corresponding slider 3-7. With this design, during turning over, the outer end of the side support frame 2-2 can slide horizontally relative to the guide rod 3-6, ensuring the overall stability of the mattress support assembly 2 and improving safety. A turning roller 2-4, capable of rolling laterally on the bed frame 1, is also provided on the outer end of the side support frame 2-2, reducing friction and noise between the side support frame and the bed frame during turning over.

[0060] Further participation Figures 2 to 4 As shown, in this embodiment, the direction conversion linkage assembly of the linkage mechanism 5 includes a linkage arm 5-1, a first linkage rod 5-2, a first linkage slider 5-3, a second linkage rod 5-4, a second linkage slider 5-5, a third linkage rod 5-6, and a third linkage slider 5-7. The linkage arm 5-1 is fixed on the turning shaft 3-10. The free ends of the linkage arm 5-1 are respectively hinged to one end of the two first linkage rods 5-2. The bottom of the bed frame 1 is provided with a linkage bracket 1-3. The linkage bracket 1-3 is generally U-shaped. Two first linkage sliders 5-3 are slidably arranged on the crossbeam of the linkage bracket 1-3. The two first linkage rods 5-2 are respectively hinged to the first linkage sliders 5-3 on the corresponding sides. A second linkage rod 5-4 is hinged to slider 5-3. Longitudinal beams are provided at both ends of the crossbeam of the linkage bracket 1-3. A second linkage slider 5-5 slides on each of the longitudinal beams on both sides. The other end of the second linkage rod 5-4 is hinged to the corresponding second linkage slider 5-5. A third linkage rod 5-6 is hinged to each of the two second linkage sliders 5-5. A third linkage slider 5-7 slides horizontally on each side of the bed frame 1. The other end of the third linkage rod 5-6 has a waist-shaped groove 5-6a. The third linkage rod 5-6 slides with the corresponding third linkage slider 5-7 through the waist-shaped groove 5-6a. The third linkage slider 5-7 is connected to the corresponding guardrail mechanism 4 via the guardrail control assembly. When the mattress support assembly 2 is in a flat position, the turning arm 3-2 and the linkage arm 5-1 are both vertically positioned in the middle of the bed frame 1. Figure 2As shown, when the mattress support assembly 2 rolls over to the left, the electric turning push rod 3-1 drives the turning swing arm 3-2 to swing to the right, which in turn drives the right-side turning support rod 3-3 and push-top connecting rod 3-4 to swing upward through the eccentric push plate 3-10a, causing the middle support frame 2-1 to flip to the left. At the same time, the linkage swing arm 5-1 swings to the right, causing the first linkage rod 5-2 and the second linkage rod 5-4 on the left to move. At this time, the second linkage slider 5-5 moves downward, causing the lower end of the third linkage rod 5-6 to move downward. When the waist-shaped groove 5-6a at the upper end of the third linkage rod 5-6 engages with the third linkage slider 5-7, it causes the third linkage slider 5-7 to move downward. This, in turn, drives the left-side guardrail mechanism 4 to swing outward and unfold through the left-side guardrail control assembly, thus extending the space on the left side of the nursing bed. Meanwhile, the first linkage rod 5-2 and the second linkage rod 5-4 on the right side move to the right, causing the second linkage slider 5-5 to move upward, which in turn causes the upper end of the third linkage rod 5-6 to move horizontally. Under the action of the waist-shaped groove 5-6a, the third linkage rod 5-6 will not drive the third linkage slider 5-7 to move, thus keeping the right-side guardrail mechanism 4 in a folded state under the action of the return spring 4-5. The structural design of this direction conversion linkage assembly is simple and ingenious, and easy to install on the nursing bed; and by utilizing the waist-shaped groove 5-6a on the third linkage rod 5-6, it can cooperate with the turning mechanism to provide a stable coordination between the turning action and the guardrail swinging and unfolding action, making the linkage action of the two more smoothly connected.

[0061] like Figures 2 to 4 As shown, in this embodiment, the guardrail control component of the linkage mechanism 5 is a rack and pinion mechanism, including a transmission rack 5-8 and a gear 5-9. The transmission rack 5-8 is horizontally fixed on the corresponding third linkage slider 5-7, and the gear 5-9 is fixed on the rotating shaft of one of the intermediate connecting rods 4-4. The transmission rack 5-8 and the gear 5-9 mesh. When the third linkage slider 5-7 moves horizontally, it drives the transmission rack 5-8 to move synchronously, which in turn drives the gear 5-9 to rotate. The rotation of the gear 5-9 drives the intermediate connecting rod 4-4 to swing, thereby controlling the four-bar linkage of the guardrail mechanism 4 to unfold outward. The unfolded intermediate connecting rod 4-4 can serve as a support for the lateral expansion space. The rack and pinion mechanism has a simple and compact structure, stable and reliable transmission, and occupies little space.

[0062] Reference Figure 5As shown in the figure, this embodiment of a nursing bed with a side-swinging space extension guardrail linked to turning also includes a backrest lifting mechanism 6. The backrest lifting mechanism 6 includes a backrest flipping frame 6-1, a backrest rotating shaft 6-2, and a backrest electric push rod 6-3. The backrest flipping frame 6-1 is fixed on the backrest rotating shaft 6-2. Both ends of the backrest rotating shaft 6-2 are rotatably mounted on the bed frame 1. One end of the backrest electric push rod 6-3 is hinged to the bed frame 1, and the other end is hinged to the backrest swing arm 6-2a on the backrest rotating shaft 6-2. The backrest flipping frame 6-1 can be controlled to flip around the backrest rotating shaft 6-2 by controlling the extension and retraction of the backrest electric push rod 6-3. The mattress support assembly 2 also has a back support and a hip support hinged together. The backrest flipping frame 6-1 is located below the back support. The lower side of the back support also has a backrest support roller 2-3 that can roll relative to the backrest flipping frame 6-1. The backrest lifting action is stable and reliable, and the friction and noise generated by the backrest lifting action are small. Specifically, in this embodiment, the aforementioned intermediate support frame 2-1 consists of a back intermediate support 2-1a and a hip intermediate support 2-1b, and the side support frame 2-2 consists of a back side support 2-2a and a hip side support 2-2b. The back intermediate support 2-1a is hinged to both sides of the back side support 2-2a, and the hip intermediate support 2-1b is hinged to both sides of the hip side support 2-2b. The back intermediate support 2-1a and hip intermediate support 2-1b are hinged together, and the back side support 2-2a is hinged to the corresponding hip side support 2-2b. Back-lifting support rollers 2-3 are respectively located at the lower parts of the back intermediate support 2-1a and the back side support 2-2a, and turning rollers 2-4 are respectively located on the back side support 2-2a and the hip side support 2-2b. The rolling direction of the back-lifting support rollers 2-3 is the front-to-back direction of the nursing bed, and the rolling direction of the turning rollers 2-4 is the left-to-right direction of the nursing bed.

[0063] Reference Figure 6 and Figure 7As shown in this embodiment, a lateral swing-space extension nursing bed with a guardrail linked to turning over also includes a leg-bending mechanism 7. This leg-bending mechanism 7 includes a first leg-bending support 7-1, a second leg-bending support 7-2, a leg-bending connecting rod 7-3, and a leg-bending electric push rod 7-4. One end of the first leg-bending support 7-1 is hinged to the rear end of the bed frame 1, and the other end of the first leg-bending support 7-1 is hinged to the second leg-bending support 7-2. One end of the leg-bending connecting rod 7-3 is connected to the rear end of the bed frame 1. One end of the first leg support 7-1 is hinged to the other end, and the other end is hinged to the lower part of the second leg support 7-2. The first leg support 7-1, the second leg support 7-2, and the leg-bending link 7-3 form a parallel four-bar linkage at the rear end of the bed frame 1. The leg-bending link 7-3 can adopt an "L"-shaped structure. One end of the leg-bending electric push rod 7-4 is hinged to the lower part of the bed frame 1, and the other end is hinged to the leg-bending link 7-3. The second leg support 7-2 moves horizontally up and down through the leg-bending electric push rod 7-4. There is one set of leg-bending links 7-3 on each side of the nursing bed. For easy connection, a first hinge seat 7-2a is provided at the lower part of the second leg support 7-2, and a second hinge seat 7-3a is provided on the leg-bending link 7-3. The leg-bending link 7-3 is hinged to the first hinge seat 7-2a, and the leg-bending electric push rod 7-4 is hinged to the leg-bending link 7-3 through the second hinge seat 7-3a. Figure 6 The image shows the supine position of the leg-flexing mechanism 7. Figure 7 The image shows the lowered state of the leg-bending mechanism 7. Figure 7 The lowered position shown makes it easier for the patient to sit up or wash their feet. Of course, the electric leg flexion lever 7-4 can also connect the second leg flexion support 7-2... Figure 6 The leg flexion mechanism 7 is slightly raised upwards, allowing the patient to slightly lift their legs while lying down, thus improving patient comfort. The second leg flexion support 7-2 has a wide range of motion, allowing the patient's legs to be raised, bent downwards, or flattened. Furthermore, the second leg flexion support 7-2 remains horizontal, allowing the patient to maintain a sitting position, facilitating tasks such as washing the patient's feet.

[0064] return Figure 1 As shown, in this embodiment, the lower part of the bed frame 1 is provided with a base frame 1-1, and the base frame 1-1 is provided with casters 1-2. The casters 1-2 can be universal casters with self-locking function to facilitate the movement of the nursing bed. The bed frame 1 and the base frame 1-1 can be fixedly connected or connected by a lifting mechanism to enable the nursing bed to have a lifting function. The front and rear ends of the bed frame 1 are also provided with bed end plates 8. On the head side, the bed end plate 8 is installed at the front end of the bed frame 1, and on the foot side, the bed end plate 8 is installed at the end of the second leg support 7-2.

[0065] [Example 2]

[0066] This embodiment of a nursing bed with a side-swinging space extension that is linked to turning over has the same basic structure and working principle as Embodiment 1, except that:

[0067] Reference Figures 8 to 11 As shown, in this embodiment, the guardrail control component of the linkage mechanism 5 is a linkage assembly 5-10, including a push-pull linkage 5-10a, a swing linkage 5-10b, and a guardrail linkage 5-10c. The push-pull linkage 5-10a, the swing linkage 5-10b, and the guardrail linkage 5-10c are all horizontally arranged. One end of the push-pull linkage 5-10a is hinged to the third linkage slider 5-7, one end of the swing linkage 5-10b is hinged to the side of the bed frame 1, and the other end of the push-pull linkage 5-10a is hinged to the middle of the swing linkage 5-10b. The push-pull linkage 5-10a and the swing linkage 5-10b form a "V"-shaped linkage structure. The other end of the swing linkage 5-10b is hinged to the guardrail linkage 5-10c, and the other end of the guardrail linkage 5-10c is hinged to the movable connecting rod 4-3 on the corresponding side. The swing link 5-10b, guardrail link 5-10c, intermediate link 4-4, and bed frame 1 form a four-bar linkage. During the horizontal movement of the third linkage slider 5-7, the push-pull link 5-10a drives the swing link 5-10b to swing, which in turn drives the movable connecting rod 4-3 to swing and unfold via the guardrail link 5-10c. This linkage assembly 5-10 has a simple and compact structure, stable and reliable transmission, and occupies little space.

[0068] This invention discloses a nursing bed with a side-swinging, space-extending guardrail linked to patient turning. It employs a parallelogram mechanism to form a guardrail that can be tilted, unfolded, or folded. The turning mechanism and the guardrail mechanisms on both sides are connected by a linkage mechanism. When the turning mechanism moves the mattress support assembly to one side, it causes the guardrail mechanism on the same side to swing outward and unfold. When the turning mechanism moves the mattress support assembly to the other side, the guardrail mechanism on the opposite side remains folded at the side of the bed frame. This allows the nursing bed to extend into the space on the turning side by unfolding the guardrail, increasing the space on that side, improving the patient's sense of security and comfort during turning, and avoiding secondary injuries during the process. Furthermore, the guardrail mechanism and linkage mechanism have a simple and compact structure, and their movement is stable and reliable.

[0069] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A nursing bed with a side-swinging guardrail that is linked to turning over, comprising a bed frame (1), a mattress support assembly (2), a turning mechanism (3), and a guardrail mechanism (4), wherein the mattress support assembly (2) is disposed on the bed frame (1), and the turning mechanism (3) is disposed on the bed frame (1) and located below the mattress support assembly (2), for driving the mattress support assembly (2) to turn over to the left and right; the guardrail mechanism (4) is installed on the left and right sides of the bed frame (1); characterized in that: The turning mechanism (3) and the guardrail mechanisms (4) on both sides are connected by a linkage mechanism (5); wherein, The guardrail mechanism (4) includes a guardrail body (4-1), a fixed connecting rod (4-2), a movable connecting rod (4-3), an intermediate connecting rod (4-4), and a return spring (4-5). The fixed connecting rod (4-2) is horizontally fixed to the side of the bed frame (1). The movable connecting rod (4-3) is connected to the fixed connecting rod (4-2) through at least two intermediate connecting rods (4-4). The movable connecting rod (4-3) and the fixed connecting rod (4-2) form a parallelogram mechanism that can be unfolded outward or folded inward through the intermediate connecting rod (4-4). The guardrail body (4-1) is mounted on the movable connecting rod (4-3). The return spring (4-5) is located between the fixed connecting rod (4-2) and the movable connecting rod (4-3) to keep the guardrail body (4-1) folding inward. The linkage mechanism (5) includes a direction conversion linkage assembly and a guardrail control assembly. The direction conversion linkage assembly is composed of multiple sets of slider linkage mechanisms, which are used to convert the turning and swaying motion on the front and rear cross sections of the nursing bed into linear motion on the horizontal planes on both sides of the nursing bed. The guardrail control assembly is connected to the direction conversion linkage assembly and the guardrail mechanism (4) respectively. When the turning mechanism (3) drives the mattress support assembly (2) to turn to one side, it drives the guardrail mechanism (4) on the same side to swing outward and unfold. When the turning mechanism (3) drives the mattress support assembly (2) to turn to the other side, it keeps the guardrail mechanism (4) on the opposite side of the bed frame (1) in a folded state.

2. The nursing bed with lateral swing space extension guardrail linked to turning over, as described in claim 1, is characterized in that: The turning mechanism (3) includes a turning electric push rod (3-1), a turning swing arm (3-2), a turning support rod (3-3), a push connecting rod (3-4), a bracket hinge seat (3-5), and a turning shaft (3-10). The turning shaft (3-10) is rotatably mounted in the middle of the bed frame (1) in the front-back direction. One end of the turning electric push rod (3-1) is hinged to the bed frame (1), and the other end is hinged to the turning swing arm (3-2) fixed on the turning shaft (3-10). One turning support rod (3-3) is provided on each of the left and right sides of the turning shaft (3-10), and the two turning support rods (3-3) are close to each other. One end of the nursing bed is rotatably connected to the bed frame (1) at the middle. The other end of the turning support rod (3-3) is hinged to the corresponding side of the mattress support assembly (2) through the push rod (3-4). An eccentric push plate (3-10a) located below the turning support rod (3-3) is also fixed on the turning shaft (3-10). When the turning electric push rod (3-1) drives the turning shaft (3-10) to rotate to one side, the eccentric push plate (3-10a) swings and pushes the turning support rod (3-3) on the corresponding side to move upward. Through the corresponding push rod (3-4), the mattress support assembly (2) is driven to turn to the opposite side.

3. The nursing bed with lateral swing-in-the-rail space extension linked to turning over, as described in claim 2, is characterized in that: The mattress support assembly (2) includes a middle support frame (2-1) and side support frames (2-2) hinged to the left and right sides of the middle support frame (2-1). A connecting plate (3-8) is hinged to the outer end of the side support frame (2-2). A slider (3-7) is provided on the connecting plate (3-8). The slider (3-7) is slidably mounted on the guide rod (3-6). The guide rod (3-6) is horizontally mounted on the bed frame (1) along the width direction of the nursing bed. A return spring (3-9) is also sleeved on the guide rod (3-6) and compressed against the slider (3-7) on the corresponding side.

4. The nursing bed with lateral swing space extension guardrail linked to turning over, as described in claim 3, is characterized in that: The outer end of the side support frame (2-2) is also provided with a turning roller (2-4) that can roll laterally on the bed frame (1).

5. The nursing bed with lateral swing space extension guardrail linked to turning over, as described in claim 2, 3, or 4, is characterized in that: The direction-converting linkage assembly of the linkage mechanism (5) includes a linkage arm (5-1), a first linkage rod (5-2), a first linkage slider (5-3), a second linkage rod (5-4), a second linkage slider (5-5), a third linkage rod (5-6), and a third linkage slider (5-7). The linkage arm (5-1) is fixed on the turning shaft (3-10). The free ends of the linkage arm (5-1) are respectively hinged to one end of the two first linkage rods (5-2). The bottom of the bed frame (1) is provided with a linkage bracket (1-3). Two first linkage sliders (5-3) are slidably provided on the crossbeam of the linkage bracket (1-3). The two first linkage rods (5-2) are respectively hinged to the first linkage sliders (5-3) on the corresponding sides. The two first linkage sliders (5-3) are respectively hinged with The second linkage rod (5-4) has longitudinal beams at both ends of the crossbeam of the linkage bracket (1-3), and a second linkage slider (5-5) is slidably provided on each of the longitudinal beams on both sides. The other end of the second linkage rod (5-4) is hinged to the second linkage slider (5-5) on the corresponding side. A third linkage rod (5-6) is hinged to each of the two second linkage sliders (5-5). A third linkage slider (5-7) is slidably provided on each side of the bed frame (1). The other end of the third linkage rod (5-6) is provided with a waist-shaped groove (5-6a). The third linkage rod (5-6) is slidably engaged with the third linkage slider (5-7) on the corresponding side through the waist-shaped groove (5-6a). The third linkage slider (5-7) is connected to the guardrail mechanism (4) on the corresponding side through the guardrail control component.

6. The nursing bed with lateral swing-in-the-rail space extension linked to turning over, as described in claim 5, is characterized in that: The guardrail control component of the linkage mechanism (5) is a gear and rack mechanism, including a transmission rack (5-8) and a gear (5-9). The transmission rack (5-8) is horizontally fixed on the corresponding third linkage slider (5-7), and the gear (5-9) is fixed on the rotating shaft of one of the intermediate connecting rods (4-4). The transmission rack (5-8) meshes with the gear (5-9).

7. The nursing bed with lateral swing space extension guardrail linked to turning over, as described in claim 5, is characterized in that: The guardrail control component of the linkage mechanism (5) is a linkage assembly (5-10), including a push-pull linkage (5-10a), a swing linkage (5-10b), and a guardrail linkage (5-10c). The push-pull linkage (5-10a), the swing linkage (5-10b), and the guardrail linkage (5-10c) are all horizontally arranged. One end of the push-pull linkage (5-10a) is hinged to the third linkage slider (5-7). One end of the swing linkage (5-10b) is hinged to the side of the bed frame (1). The other end of the push-pull linkage (5-10a) is hinged to the middle of the swing linkage (5-10b). The other end of the swing linkage (5-10b) is hinged to the guardrail linkage (5-10c). The other end of the guardrail linkage (5-10c) is hinged to the movable connecting rod (4-3) on the corresponding side.

8. The nursing bed with lateral swing space extension guardrail linked to turning over, as described in claim 1, is characterized in that: It also includes a backrest lifting mechanism (6), which includes a backrest flipping frame (6-1), a backrest rotating shaft (6-2), and a backrest electric push rod (6-3). The backrest flipping frame (6-1) is fixed on the backrest rotating shaft (6-2). The two ends of the backrest rotating shaft (6-2) are respectively rotatably mounted on the bed frame (1). One end of the backrest electric push rod (6-3) is hinged to the bed frame (1), and the other end is hinged to the backrest swing arm (6-2a) on the backrest rotating shaft (6-2). The mattress support assembly (2) also has a back support and a hip support hinged together. The backrest flipping frame (6-1) is located below the back support. The lower side of the back support also has a backrest support roller (2-3) that can roll relative to the backrest flipping frame (6-1).

9. The nursing bed with lateral swing-in-the-rail space extension linked to turning over, as described in claim 1, is characterized in that: It also includes a leg-bending mechanism (7), which includes a first leg-bending bracket (7-1), a second leg-bending bracket (7-2), a leg-bending link (7-3), and a leg-bending electric push rod (7-4). One end of the first leg-bending bracket (7-1) is hinged to the rear end of the bed frame (1), and the other end of the first leg-bending bracket (7-1) is hinged to the second leg-bending bracket (7-2). One end of the leg-bending link (7-3) is hinged to the rear end of the bed frame (1). The other end is hinged to the lower part of the second leg support (7-2). The first leg support (7-1), the second leg support (7-2) and the leg link (7-3) form a parallel four-bar linkage at the rear end of the bed frame (1). One end of the leg electric push rod (7-4) is hinged to the lower part of the bed frame (1) and the other end is hinged to the leg link (7-3). The second leg support (7-2) is driven to move horizontally up and down by the leg electric push rod (7-4).

10. The nursing bed with lateral swing-in-the-rail space extension linked to turning over, as described in claim 1, is characterized in that: The lower part of the bed frame (1) is provided with a bottom frame (1-1), and the bottom frame (1-1) is provided with casters (1-2). The front and rear ends of the bed frame (1) are also provided with bed end baffles (8).

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