A folding electric bed

Abstract

A folding electric bed, relating to the field of furniture manufacturing technology, includes a left bed frame, a right bed frame, and a folding mechanism. The left and right bed frames are connected via the folding mechanism. Mattress support components are placed on the left and right bed frames. The folding mechanism includes at least one set of left bed frame rotating units fixed to the left bed frame, a right bed frame rotating unit fixed to the right bed frame, and pins pivotally connecting the left and right bed frame rotating units. Each pin is equipped with a safety cotter pin. This invention connects the left and right bed frames via a folding mechanism and uses pins and safety cotter pins to achieve a stable pivot connection. This simplifies the traditional segmented steel frame structure, reduces the number of parts, lowers transportation volume and installation complexity, and has the advantages of simplified structure, easy transportation and installation, and high reliability.

Description

Technical Field

[0001] This utility model relates to the field of home furnishing manufacturing technology, and more specifically, to a folding electric bed. Background Technology

[0002] As an important component of modern home furnishings, electric beds play a vital role in enhancing user sleep comfort. However, existing electric bed products still have many shortcomings in terms of structural design and user experience. Firstly, in terms of structure, traditional electric beds typically use a segmented steel frame structure with pivot joints to achieve folding functionality. This complex design, with numerous parts, not only increases manufacturing costs but also affects product reliability. Secondly, in terms of transportation, the large size and heavy weight of the bed pose significant challenges for transport and installation. While some manufacturers use a modular, disassembled packaging method to address transportation issues, this introduces new problems: installation requires professional personnel using specialized tools, which increases service costs and extends user waiting time. According to relevant industry data, the average waiting period from purchase to installation is 3-5 days. Furthermore, the complex installation process can easily lead to parts confusion, requiring installers to possess expertise in multiple areas, including mechanics and electrical systems.

[0003] These problems seriously affect the user experience, and there is an urgent need for a new type of electric bed solution that can simplify structural design, facilitate transportation and quick installation, and reduce professional dependence. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art, and to propose a folding electric bed.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A folding electric bed includes a left bed frame, a right bed frame, and a folding mechanism. The left and right bed frames are connected by the folding mechanism. Mattress support components are placed on the left and right bed frames. The folding mechanism includes at least one set of left bed frame rotating units fixed to the left bed frame, a right bed frame rotating unit fixed to the right bed frame, and pins pivotally connecting the left and right bed frame rotating units. The pins are equipped with safety cotter pins.

[0006] The solution is detailed as follows: the left bed rotating unit is a first connecting plate, and the right bed rotating unit is a second connecting plate. The first connecting plate is bolted to the third connecting plate, and the second connecting plate is bolted to the fourth connecting plate. The fourth and third connecting plates are bolted together with a connecting block. A screw is welded to the connecting block, and an outer sleeve is threaded onto the screw. A spring is welded to the outer sleeve. A second fixing plate is welded to the second connecting plate, and a first fixing plate is welded to the second connecting plate. The second fixing plate is fixedly connected to the second bed, and the first fixing plate is fixedly connected to the first bed. A lower extension plate is connected to the first fixing plate, and a vertical sliding groove is formed on the lower extension plate. A slider is slidably fitted in the vertical sliding groove, and a spring is fixedly connected to the slider. A locking bolt is provided on the slider, and locking threaded holes that mate with the locking bolt are provided at different heights in the vertical sliding groove.

[0007] In a more detailed design, the left bed rotating unit is a first rotating arm, and the right bed rotating unit is a second rotating arm. The first rotating arm and the second rotating arm are pivotally connected by pins. The first rotating arm has a first connecting end and a second connecting end, and the second rotating arm has a third connecting end and a fourth connecting end. The first connecting end is rotatably connected to a first support plate, and the third connecting end is rotatably connected to a second support plate. The second support plate is fixedly connected to the second bed, and the first support plate is fixedly connected to the first bed.

[0008] Furthermore, the right bed frame includes a backrest frame, a right bed frame hip fixation frame, and a right bed electric cylinder; the backrest frame is pivotally connected to the right bed frame hip fixation frame; one end of the right bed electric cylinder is pivotally connected to the right bed frame hip fixation frame, and the other end is pivotally connected to the backrest frame.

[0009] Furthermore, the right bed frame electric cylinder can drive the back bed frame to rotate around the right bed frame hip fixation frame.

[0010] Furthermore, the left bed frame includes a leg frame, a foot frame, a left bed frame hip fixation frame, a left bed electric cylinder, and a foot lever; one end of the leg frame is pivotally connected to the foot frame, and the other end is pivotally connected to the left bed frame hip fixation frame; one end of the left bed electric cylinder is pivotally connected to the left bed frame hip fixation frame, and the other end is pivotally connected to the leg frame; one end of the foot lever is pivotally connected to the left bed frame hip fixation frame, and the other end is pivotally connected to the foot frame.

[0011] Furthermore, the left bed frame electric cylinder can drive the leg bed frame to rotate around the left bed frame hip fixed bed frame, and the foot bed frame can translate or rotate under the linkage of the foot pull rod.

[0012] Furthermore, the backrest bed frame, the right bed frame with hip fixation, the leg bed frame, the foot bed frame, and the left bed frame with hip fixation are all composed of horizontal beams, vertical beams, and uprights. Each of these four bed frames has at least one set of parallel horizontal beams and at least one set of parallel vertical beams. The horizontal beams and vertical beams are perpendicularly aligned and together form vertically distributed support planes. The uprights are vertically arranged on the upper and lower support planes, and both ends of the uprights are connected to the upper and lower support planes respectively, forming a three-dimensional support space together with the horizontal beams and vertical beams.

[0013] Furthermore, the backrest bed frame is provided with a middle support beam and a reinforcing beam at the middle position of the upper support plane. A first mounting bracket is provided at the bottom of the joint between the middle support beam and the reinforcing beam. A second mounting bracket is provided on the vertical beam of the right bed frame at the middle position of the lower support plane. A right bed electric cylinder is provided between the first mounting bracket and the second mounting bracket.

[0014] Furthermore, the left bed frame with hip fixation is provided with a third mounting bracket on the vertical beam located in the middle of the lower support plane, and the leg frame is provided with a fourth mounting bracket on the vertical beam located in the middle of the upper support plane. The left bed electric cylinder is provided between the third mounting bracket and the fourth mounting bracket.

[0015] Furthermore, the backrest bed frame, the right bed frame with hip fixation, the leg bed frame, the foot bed frame, and the left bed frame with hip fixation are equipped with mattress support components, which are one or more combinations of bed boards, rib strips, high-strength plastic strips, or bed netting.

[0016] Furthermore, the bottom of the left and right bed bodies is provided with an unstable balancing base, which can be an integrated unstable balancing base or a split unstable balancing base.

[0017] Furthermore, the split-type instability balance base includes a left bed frame instability balance base and a right bed frame instability balance base. The left bed frame with its hip-fixed bottom is provided with a left bed frame instability balance base, which is located directly below the leg frame. The right bed frame with its hip-fixed bottom is provided with a right bed frame instability balance base, which is located directly below the back frame.

[0018] Furthermore, the footrest bed frame has an L-shaped groove and a locking mechanism for its connecting rod, and the footrest is telescopic.

[0019] Furthermore, a plurality of threaded holes are formed on one side of the L-shaped groove. The locking mechanism includes a slider that can slide along the L-shaped groove. A rotating shaft is provided on one side of the slider, and a foot pull rod is rotatably connected to the rotating shaft. A locking bolt is provided on the slider, and the locking bolt is threaded into the threaded hole. The foot pull rod includes an outer sleeve and an inner insert rod. The inner insert rod has a plurality of insertion holes, and a fastening bolt is provided on the outer sleeve. The fastening bolt can pass through the outer sleeve and be inserted into the insertion holes to restrict the relative movement between the inner insert rod and the outer sleeve. The end of the inner insert rod is rotatably connected to the rotating shaft, and the outer sleeve is rotatably connected to the left bed frame at the hip.

[0020] Furthermore, several locking units are provided between the left bed frame and the right bed frame. Furthermore, self-lubricating wear-resistant nylon gaskets are sandwiched between the rigid metal components that are connected in pairs.

[0021] Compared with the prior art, the beneficial effects of this utility model are: the left and right bed bodies are connected by a folding mechanism, and a stable pivot connection is achieved by using pins and safety cotter pins, which simplifies the traditional segmented steel frame structure, reduces the number of parts, reduces transportation volume and installation complexity, and has the advantages of simplified structure, easy transportation and installation and high reliability. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is the front view of the present invention; Figure 3 This is a schematic diagram of the structure of this utility model when folded; Figure 4 This is a three-dimensional structural diagram of the present invention when the mattress support components are removed; Figure 5 This is a schematic diagram of the structure of the second embodiment of the folding mechanism; Figure 6 This is a schematic diagram of the disassembled structure of the second embodiment of the folding mechanism; Figure 7 This is a schematic diagram of the third embodiment of the folding mechanism; Figure 8 This is a schematic diagram of the third embodiment of the folding mechanism in the product; Figure 9 This is a schematic diagram of the third embodiment of the folding mechanism in its maximum straight-line flattened state in the product. Figure 10 This is a schematic diagram of the state of the third embodiment of the folding mechanism at a certain moment during the folding process; Figure 11 This is a schematic diagram of the folded state of the third embodiment of the folding mechanism; The components include: 1. Left bed frame, 11. Leg frame, 111. Pull rod connecting bracket, 112. L-shaped groove, 12. Leg frame, 13. Left bed frame hip fixation frame, 14. Left bed electric cylinder, 15. Leg pull rod. 2. Right bed frame, 21. Backrest frame, 211. Central support beam, 212. Reinforcing beam, 22. Right bed frame with hip fixation, 23. Right bed electric cylinder. 3 Folding mechanism, 31 Left bed rotating unit, 32 Right bed rotating unit, 33 Pin, 34 Fourth connecting plate, 35 Third connecting plate, 36 Connecting block, 37 Screw, 38 Outer sleeve, 39 Spring, 311 First fixing plate, 312 Lower extension plate, 313 Vertical slide groove, 321 Second fixing plate, 3101 First connecting end, 3102 Second connecting end, 3103 First support plate, 3201 Third connecting end, 3202 Fourth connecting end, 3203 Second support plate; 41 Left bed instability balance base, 42 Right bed instability balance base, 5 Locking units. 601 Horizontal beam, 602 Vertical beam, 603 Column. 701 Second mounting bracket, 702 Third mounting bracket, 703 Fourth mounting bracket, 100 Mattress support component. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments: In existing technologies, electric beds generally adopt a segmented steel frame hinged structure, resulting in a large number of parts and complex assembly. Their large overall size makes them difficult to transport to homes. While a modular design reduces transportation difficulty, installation requires professional personnel, leading to long waiting times for customers and increasing the risk of parts mixing, further complicating installation. A community nursing home's purchase of electric beds resulted in insufficient installation personnel, causing equipment to sit idle and delaying care services, highlighting the shortcomings of traditional solutions in terms of convenience and service efficiency.

[0024] To address these issues, the R&D team discovered that the core challenge lay in balancing structural complexity with ease of installation. Traditional folding mechanisms often employ multi-stage linkages or gear transmissions, which, while enabling angle adjustment, drastically increase the number of parts. By analyzing the force transmission path, they found that a rotating unit coupled with pins could replace the complex transmission structure. Further considering transportation scenarios, the bed frame was divided into left and right modules and secured with detachable connectors, reducing packaging volume while maintaining the integrity of the main frame. The introduction of safety cotter pins solved the pain point of traditional bolted connections requiring tool disassembly, making the modular assembly process more suitable for non-professionals.

[0025] A folding electric bed includes a left bed frame 1, a right bed frame 2, and a folding mechanism 3. The left and right bed frames are connected by the folding mechanism. The folding mechanism allows the bed frame to be folded down to a significantly smaller size, facilitating installation, transportation, and packaging. Mattress support components 100 are placed on the left and right bed frames.

[0026] In at least one embodiment, the folding mechanism 3 includes at least one set of left bed rotating units 31 fixed to the left bed body, right bed rotating units 32 fixed to the right bed body, and pins 33 pivotally connecting the left bed rotating units and the right bed rotating units, the pins being equipped with safety cotter pins.

[0027] The left bed frame refers to the left side of the bed frame module, which includes the supporting structure. This can be achieved using a welded rectangular steel tube frame, serving as the main structure supporting the weight of the bed. The right bed frame refers to the right side of the bed frame module, which also includes the supporting structure. This can be a symmetrical frame structure with a folding mechanism that allows relative rotation between the two sides. The folding mechanism is the mechanical device that enables relative rotation between the left and right bed frames. It can be a pivotal structure using a rotating unit and a pin. The left rotating unit is welded to the end of the left bed frame, and the right rotating unit is welded to the front of the right bed frame. The two are connected by a pin to form a rotating pair. The safety cotter pin is a device used to prevent the pin from falling out. It can be a cotter pin structure made of spring steel sheets. After being inserted into the hole at the end of the pin, the two side claws unfold to prevent the pin from accidentally coming out under vibration.

[0028] Traditional folding beds use a single frame with multiple hinges, maintaining a large volume even when folded. This solution utilizes a modular design, allowing the left and right bed frames to be completely separated and folded, facilitating standardized production, storage, and packaging. Existing technologies often use bolts and nuts for fastening, requiring tools like wrenches for installation. This solution eliminates the need for on-site installation; simply open and flatten the bed upon arrival. Ordinary users can complete installation within twenty minutes by referring to the instruction manual. The design of the rotating unit and pins ensures structural strength while effectively reducing the number of parts, lowering the installation error rate by approximately 60%. The anti-loosening feature of the safety cotter pin ensures reliable connection during use, preventing the risk of mechanism loosening due to vibration.

[0029] In some embodiments, such as Figure 5 and Figure 6 As shown, the left bed rotating unit 31 is the first connecting plate, and the right bed rotating unit 32 is the second connecting plate. The first connecting plate is bolted to the third connecting plate 35, and the second connecting plate is bolted to the fourth connecting plate 34. The fourth connecting plate, the third connecting plate, and the connecting block 36 are bolted together. A screw 37 is welded to the connecting block, and an outer sleeve 38 is threaded onto the screw. A spring 39 is welded to the outer sleeve. A second fixing plate 321 is welded to the second connecting plate, and a first fixing plate 311 is welded to the second connecting plate. The second fixing plate is fixedly connected to the second bed, and the first fixing plate is fixedly connected to the first bed. A lower extension plate 312 is connected to the first fixing plate. A vertical slide groove 313 is formed on the lower extension plate. A slider is slidably fitted in the vertical slide groove. A spring is fixedly connected to the slider, and a locking bolt is provided on the slider. Correspondingly, locking threaded holes that mate with the locking bolt are provided at different heights in the vertical slide groove.

[0030] In some embodiments, such as Figures 7 to 11 As shown, the left bed rotating unit 31 is the first rotating arm, and the right bed rotating unit 32 is the second rotating arm. The first and second rotating arms are pivotally connected by pins 33. The first rotating arm has a first connecting end 3101 and a second connecting end 3102, and the second rotating arm has a third connecting end 3201 and a fourth connecting end 3202. The first connecting end is rotatably connected to the first support plate 3103, and the third connecting end is rotatably connected to the second support plate 3203. The second support plate is fixedly connected to the second bed, and the first support plate is fixedly connected to the first bed. By changing the positions of the second and fourth connecting ends, different folding angles of the first and second bed can be achieved. This mechanism can be translated (pulled out / folded) and rotated and folded, making it suitable for furniture applications.

[0031] In at least one embodiment, the right bed frame 2 includes a backrest bed frame 21, a right bed frame hip fixation bed frame 22, and a right bed electric cylinder 23; the backrest bed frame is pivotally connected to the right bed frame hip fixation bed frame; one end of the right bed electric cylinder is pivotally connected to the right bed frame hip fixation bed frame, and the other end is pivotally connected to the backrest bed frame.

[0032] The solution is detailed in that the electric cylinder of the right bed frame can drive the back bed frame to rotate around the right bed frame hip fixation frame.

[0033] The right bed frame with a fixed hip support refers to the support frame that bears the hip area and is fixed in position. It can be implemented using a welded or bolted metal frame structure, and its function is to provide a stable fulcrum for the backrest frame. The backrest frame is the movable frame that supports the user's back. It can be connected to the right bed frame with a hinge or pivot, and its function is to adjust the angle of the user's back by rotation. The right bed frame electric cylinder is a linear actuator that drives the movement of the backrest frame. It can be implemented using an electric actuator with a motor and push rod, and its function is to directly control the rotation angle of the backrest frame through telescopic movement, avoiding the use of complex multi-stage hinge structures.

[0034] Specifically, the backrest frame is pivotally connected to the right bed frame's hip-fixed frame via a pivot shaft. The two ends of the right bed frame's electric cylinder are fixed to the hip-fixed frame and the backrest frame respectively via hinged seats. When the electric cylinder is energized, the extension and retraction of the push rod is converted into a rotational motion of the backrest frame around a fixed fulcrum. Because the electric cylinder directly drives the backrest frame, no additional linkage or gear transmission mechanism is needed, resulting in a more compact overall structure.

[0035] In at least one embodiment, the left bed frame 1 includes a leg frame 12, a foot frame 11, a left bed frame hip fixation frame 13, a left bed electric cylinder 14, and a foot pull rod 15; one end of the leg frame is pivotally connected to the foot frame, and the other end is pivotally connected to the left bed frame hip fixation frame; one end of the left bed electric cylinder is pivotally connected to the left bed frame hip fixation frame, and the other end is pivotally connected to the leg frame; one end of the foot pull rod is pivotally connected to the left bed frame hip fixation frame, and the other end is pivotally connected to the foot frame.

[0036] In a more detailed design, the electric cylinder of the left bed frame can drive the leg frame to rotate around the left bed frame hip-fixed frame, and the foot frame can translate or rotate under the linkage of the foot lever.

[0037] The leg frame refers to the framework structure that supports the user's legs. It can be constructed using welded metal tubing to form a rectangular frame, with its pivot point layout allowing for the mechanical transmission of angle adjustment movements. The footrest is the linkage connecting the fixed bed frame and the leg frame. It can be implemented using an adjustable-length linkage mechanism, rigidly constraining the movement trajectory of the leg frame. The left bed frame electric cylinder is the power unit that drives the leg frame movement. It can be implemented using an electric actuator or a linear motor, changing the tilt angle of the leg frame through telescopic movement. Specifically, the left bed frame with a fixed hip frame serves as the structural foundation. The leg frame forms a rotating joint with the foot frame via a pivot point. The extension and retraction of the left bed frame's electric cylinder directly drives the leg frame to rotate around the fixed point. At this time, the foot lever, through rigid linkage, forces the foot frame to perform translational or rotational movements. This linkage mechanism allows the folding movements of the legs and feet to be driven by a single power source, eliminating the need for additional control components and thus reducing the number of parts. Through the above technical solution, this application achieves synchronous control of leg and foot folding movements, simplifies the structure and reduces transportation volume. Users only need to connect the electric cylinder power supply to use it, without the need for professional tools or mechanical knowledge, effectively shortening the installation time and improving the ease of operation.

[0038] In at least one embodiment, the backrest bed frame, the right bed frame with hip fixation, the leg bed frame, the foot bed frame, and the left bed frame with hip fixation are all composed of crossbeams 601, vertical beams 602, and uprights 603. Each of the backrest bed frame, the right bed frame with hip fixation, the leg bed frame, the foot bed frame, and the left bed frame with hip fixation is provided with at least one set of parallel crossbeams and at least one set of parallel vertical beams. The crossbeams and vertical beams are perpendicularly aligned and together enclose a vertically distributed support plane. The uprights are vertically arranged on the upper and lower support planes, and both ends of the uprights are connected to the upper and lower support planes respectively, forming a three-dimensional support space together with the crossbeams and vertical beams.

[0039] In this structure, horizontal beams are horizontally extending support members, typically made of rectangular steel pipes or channel steel, used in conjunction with vertical beams to form a planar support structure. Vertical beams are vertically extending support members, typically made of angle steel or I-beams, intersecting with horizontal beams to form a grid-like support plane. Columns are vertical support members perpendicular to the support plane, typically made of hollow square steel or round pipes, connecting the upper and lower support planes to form a three-dimensional frame structure, enhancing overall rigidity. The support plane is the grid-like plane formed by the intersection of horizontal and vertical beams; the upper and lower distributed support planes are connected by columns to form a layered support structure, distributing load pressure.

[0040] Specifically, the horizontal and vertical beams are vertically arranged and intersect each other, forming two layers of support planes with a grid structure. The columns are vertically fixed between the upper and lower support planes, for example, by welding or bolting their ends to the intersection points of the upper and lower support planes. This forms a three-dimensional support frame composed of horizontal beams, vertical beams, and columns. For example, the upper support plane supports the mattress, while the lower support plane houses drive components such as electric cylinders. The three-dimensional support space separates functional areas through a layered design; for example, drive components and the bed frame structure are placed on different planes to avoid movement interference.

[0041] Furthermore, the backrest bed frame is provided with a middle support beam 211 and a reinforcing beam 212 at the middle position of the upper support plane. A first mounting bracket is provided at the bottom of the joint between the middle support beam and the reinforcing beam. A second mounting bracket 701 is provided on the vertical beam of the right bed frame at the middle position of the lower support plane. A right bed electric cylinder is provided between the first mounting bracket and the second mounting bracket.

[0042] The intermediate support beam is a load-bearing component arranged longitudinally along the bed frame. It can be formed by welding rectangular steel tubing and is used to distribute the load when the back of the bed frame rotates. The reinforcing beam is an auxiliary support structure that intersects with the intermediate support beam. It can be made of angle steel or channel steel and fixed to the underside of the intermediate support beam by bolts or welding, used to improve the bending strength of the joint. The first mounting bracket is a metal base that supports the end connection of the electric cylinder. It can be made of stamped steel plate with mounting holes and fixed to the intersection of the intermediate support beam and the reinforcing beam by welding or bolts. The second mounting bracket is a connecting component fixed to the vertical beam of the right bed frame at the buttocks. It can be made of steel plate with a U-shaped groove and connected to the vertical beam by welding, used to provide a positioning reference for the pivot connection of the other end of the electric cylinder.

[0043] Specifically, the intermediate support beam and the reinforcing beam are positioned at the center of the upper support plane, with a first mounting bracket installed at the bottom of their joint. A second mounting bracket is fixed to the vertical beam of the right bed frame's hip-mounted structure. The two ends of the right bed's electric cylinder are pivotally connected to the first and second mounting brackets, respectively. When the electric cylinder extends or retracts, the driving force is transmitted to the intermediate support beam through the first mounting bracket, causing the backrest bed frame to rotate around the right bed frame's hip-mounted structure. The intersecting structure of the intermediate support beam and the reinforcing beam suppresses bed frame deformation, while the positioning design of the first and second mounting brackets ensures that the electric cylinder's installation position matches the bed frame's movement trajectory, avoiding motion interference.

[0044] Furthermore, the left bed frame with hip fixation is provided with a third mounting bracket 702 on the vertical beam located in the middle of the lower support plane, and the leg frame is provided with a fourth mounting bracket 703 on the vertical beam located in the middle of the upper support plane. The left bed electric cylinder is provided between the third mounting bracket and the fourth mounting bracket.

[0045] The third mounting bracket refers to the connecting structure fixed to the middle vertical beam of the lower support plane. It can be implemented using welded or bolted metal plates, providing a stable lower support point for the left bed electric cylinder. The fourth mounting bracket refers to the connecting structure fixed to the middle vertical beam of the upper support plane. It can be implemented using a metal block with through holes, providing a rotatable upper connection point for the left bed electric cylinder.

[0046] In at least one embodiment, the backrest bed frame, the right bed frame with hip fixation, the leg bed frame, the foot bed frame, and the left bed frame with hip fixation are provided with mattress support components 100, which are one or more combinations of bed boards, rib strips, high-strength plastic strips, or bed netting.

[0047] Among them, the mattress support components refer to the basic structure used to support the mattress, which can be implemented using a bed board. The bed board is formed by splicing together boards to create a rigid support surface. The ribs refer to multiple parallel strip-shaped support bodies, which can be made of wood or metal, and the spacing between the strips can be adjusted to adapt to different mattress types. The high-strength plastic strips refer to polymer material support strips with bending resistance, which can be made of polycarbonate or nylon and processed by injection molding. The bed mesh refers to the support surface composed of an elastic mesh structure, which can be made of metal spring mesh or woven fiber mesh and fixed by an edge frame. In at least one embodiment, the bottom of the left bed and the right bed are provided with an unstable balancing base, which is either an integral unstable balancing base or a split unstable balancing base.

[0048] Furthermore, the split-type unstable balance base includes a left bed frame unstable balance base 41 and a right bed frame unstable balance base 42. The left bed frame with the hip fixed bed frame has the left bed frame unstable balance base 41 at the bottom, and the left bed frame unstable balance base is located directly below the leg bed frame; the right bed frame with the hip fixed bed frame has the right bed frame unstable balance base 42 at the bottom, and the right bed frame unstable balance base is located directly below the back bed frame.

[0049] The left bed frame instability balancing base is a support structure fixed to the bottom of the left bed frame's hip joint, providing vertical support to counteract the overturning moment generated by the leg frame when the bed is unfolded. The right bed frame instability balancing base is a support structure fixed to the bottom of the right bed frame's hip joint, transferring loads through the contact surface to maintain overall center of gravity balance when the back frame is raised. An integrated instability balancing base combines the support bases of the left and right beds into a single structure, which can be achieved using welding or casting processes to form a monolithic metal frame. Its function is to eliminate gaps between separate bases and improve overall structural stability.

[0050] In at least one embodiment, the footrest connecting bracket 111 of the footrest bed frame is provided with an L-shaped groove 112 and equipped with a locking mechanism, and the footrest is telescopic; by adjusting the length of the footrest in the L-shaped groove, the footrest bed frame can be made to present different angles.

[0051] In some embodiments, a plurality of threaded holes are formed on one side of the L-shaped groove. The locking mechanism includes a slider that can slide along the L-shaped groove. A rotating shaft is provided on one side of the slider, and a foot pull rod is rotatably connected to the rotating shaft. A locking bolt is provided on the slider, and the locking bolt is threaded into the threaded hole. The foot pull rod includes an outer sleeve and an inner insert rod. The inner insert rod has a plurality of insertion holes, and a fastening bolt is provided on the outer sleeve. The fastening bolt can pass through the outer sleeve and be inserted into the insertion holes to restrict the relative movement between the inner insert rod and the outer sleeve. The end of the inner insert rod is rotatably connected to the rotating shaft, and the outer sleeve is rotatably connected to the left bed frame at the hip.

[0052] The L-shaped groove refers to a guide structure with vertical and horizontal sections, which can be achieved using a machined metal groove. The slider is positioned by a threaded hole and a locking bolt. The slider slides along the L-shaped groove to adjust the installation position of the foot pull rod, resolving part position deviation issues during installation. The locking bolt is screwed into the threaded hole to fix the slider position, eliminating the need for additional tools. The inner rod of the foot pull rod and the outer tube are fitted with insertion holes, and the length is adjusted by inserting a fastening bolt into different holes to accommodate different users' needs for the bed's unfolding angle. A self-lubricating, wear-resistant nylon gasket is sandwiched between the metal connectors. In at least one embodiment, several locking units 5 are provided between the left and right bed hip-fixed frames. These locking units connect the left and right bed frames using bolts or snap-fit ​​structures, enhancing the stability of the connection between the two frames when the bed is unfolded. In at least one embodiment, a self-lubricating wear-resistant nylon gasket is sandwiched between the rigid metal parts that are connected in pairs to reduce frictional loss at the hinge and reduce maintenance frequency.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A folding electric bed, characterized in that, The device includes a left bed frame, a right bed frame, and a folding mechanism. The left and right bed frames are connected by the folding mechanism. Mattress support components are placed on the left and right bed frames. The folding mechanism includes at least one set of left bed frame rotating units fixed to the left bed frame, a right bed frame rotating unit fixed to the right bed frame, and pins pivotally connecting the left and right bed frame rotating units. The pins are equipped with safety cotter pins.

2. The folding electric bed according to claim 1, characterized in that, The right bed frame includes a backrest frame, a right bed frame hip fixation frame, and a right bed electric cylinder; the backrest frame is pivotally connected to the right bed frame hip fixation frame; one end of the right bed electric cylinder is pivotally connected to the right bed frame hip fixation frame, and the other end is pivotally connected to the backrest frame, and the right bed electric cylinder can drive the backrest frame to rotate around the right bed frame hip fixation frame.

3. The folding electric bed according to claim 2, characterized in that, The left bed frame includes a leg frame, a foot frame, a left bed frame hip fixation frame, a left bed frame electric cylinder, and a foot lever. One end of the leg frame is pivotally connected to the foot frame, and the other end is pivotally connected to the left bed frame hip fixation frame. One end of the left bed frame electric cylinder is pivotally connected to the left bed frame hip fixation frame, and the other end is pivotally connected to the leg frame. One end of the foot lever is pivotally connected to the left bed frame hip fixation frame, and the other end is pivotally connected to the foot frame. The left bed frame electric cylinder can drive the leg frame to rotate around the left bed frame hip fixation frame, and the foot frame can translate or rotate under the linkage of the foot lever.

4. The folding electric bed according to claim 3, characterized in that, The backrest bed frame, right bed frame with hip fixation, leg bed frame, foot bed frame, and left bed frame with hip fixation are all composed of horizontal beams, vertical beams, and uprights. Each of these bed frames has at least one set of parallel horizontal beams and at least one set of parallel vertical beams. The horizontal beams and vertical beams are perpendicularly aligned and together form vertically distributed support planes. The uprights are vertically arranged on the upper and lower support planes, with both ends of the uprights connected to the upper and lower support planes respectively, and together with the horizontal beams and vertical beams, they form a three-dimensional support space.

5. The folding electric bed according to claim 4, characterized in that, The backrest bed frame is provided with a middle support beam and a reinforcing beam at the middle position of the upper support plane. A first mounting bracket is provided at the bottom of the joint between the middle support beam and the reinforcing beam. A second mounting bracket is provided on the vertical beam of the right bed frame at the middle position of the lower support plane. A right bed electric cylinder is provided between the first mounting bracket and the second mounting bracket.

6. The folding electric bed according to claim 4, characterized in that, The left bed frame with hip fixation is provided with a third mounting bracket on the vertical beam located in the middle of the lower support plane, and the leg frame is provided with a fourth mounting bracket on the vertical beam located in the middle of the upper support plane. The left bed electric cylinder is provided between the third mounting bracket and the fourth mounting bracket.

7. The folding electric bed according to claim 5 or 6, characterized in that, The backrest bed frame, right bed frame, leg bed frame, foot bed frame, and left bed frame are equipped with mattress support components, which are one or more combinations of bed boards, rib strips, high-strength plastic strips, or bed netting.

8. The folding electric bed according to claim 1, characterized in that, The bottom of the left and right bed bodies is provided with an unstable balance base, which can be an integrated unstable balance base or a split unstable balance base.

9. The folding electric bed according to claim 7, characterized in that, The footrest bed frame's connecting rod bracket has an L-shaped groove and a locking mechanism. One side of the L-shaped groove has several threaded holes. The locking mechanism includes a slider that can slide along the L-shaped groove. A rotating shaft is located on one side of the slider, and a footrest is rotatably connected to the rotating shaft. A locking bolt is located on the slider and threaded into the threaded hole. The footrest includes an outer sleeve and an inner rod. The inner rod has several insertion holes, and a fastening bolt is located on the outer sleeve. The fastening bolt can pass through the outer sleeve and be inserted into the insertion holes to restrict relative movement between the inner rod and the outer sleeve. The end of the inner rod is rotatably connected to the rotating shaft, and the outer sleeve is rotatably connected to the left bed frame's hip joint.

10. The folding electric bed according to claim 9, characterized in that, Several locking units are provided between the left and right bed frame hip fixation frames.

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