A multifunctional flat transfer machine

Abstract

The application belongs to the technical field of nursing equipment, and particularly relates to a multifunctional lying transfer machine. The transfer machine comprises a chassis, a lifting device, a seat frame and a gas spring power assisting device. The bottom of the chassis is provided with a plurality of walking wheels, and at least one walking wheel is provided with a brake executing mechanism. The lifting device comprises a vertically arranged lifting column and at least one set of linear guide rod assembly. The linear guide rod assembly is arranged in parallel with the lifting column and is connected between the chassis and the seat frame, so as to enhance the stability and anti-unbalance capacity during lifting, effectively inhibit the jam or shaking caused by the wear of components due to long-term weight use. The front part of the seat frame is hingedly connected with a leg support frame, and the rear part is connected with a backrest frame through a hinge shaft. The backrest frame is a rigid frame structure, and a set of gas spring power assisting devices are arranged between the backrest frame and the seat frame. The two ends of the device are connected with the seat frame and the backrest frame through external hinging, so as to provide initial power when adjusting the backrest angle and significantly reduce the manual operation force.

Description

Technical Field

[0001] This application belongs to the field of nursing equipment technology, specifically relating to a multifunctional supine transfer machine. Background Technology

[0002] In the field of geriatric care and rehabilitation equipment, manually operated mechanical reclining transfer machines are a fundamental and important assisted transport tool. Due to their relatively low cost and simple, reliable structure, they are widely used in the daily care of elderly people who need to be bedridden or have limited mobility. The core function of this type of equipment is to assist in the repositioning and back posture adjustment of the elderly person through manual operation by caregivers. Its typical structure usually includes a chassis with casters, a manually operated hydraulic or mechanical screw-type lifting column, a boom system, and a backrest connected to the main body via a simple hinge. The angle adjustment of the backrest is entirely achieved manually, mechanically, such as by cranking, levering, or directly pushing, causing the backrest to rotate around a fixed hinge axis, thereby allowing the user to sit up or lie flat. Simultaneously, the equipment is usually equipped with a fixed or simply pluggable headrest, whose main function is to provide static support for the head.

[0003] However, this purely manual mechanical structure has revealed many significant drawbacks in long-term practical application, especially under heavy loads. The fundamental problem lies in the fact that when the user is on the backrest, any adjustment requires the caregiver to directly overcome two major resistances: the enormous load torque generated by the user's weight, and the static friction at the hinge pivot and the friction within the mechanical transmission components. Traditional hinge rotation mechanisms lack effective assist or labor-saving designs, making operation extremely heavy and strenuous for caregivers. Often, a significant amount of physical exertion is required to initiate and complete the backrest adjustment. This process is not only inefficient and time-consuming, but also prone to instability and jerking due to the caregiver's need to simultaneously support part of the user's weight with their bare hands to maintain balance while performing the adjustment. This causes discomfort for the user and increases the caregiver's workload and risk of muscle strain. Furthermore, the lifting column, as a core load-bearing component, is prone to slight deformation of its internal mechanical transmission parts, such as lead screws or gear racks, due to wear and fatigue after long-term heavy-duty cyclic use. This leads to increased clearance, which manifests as a larger free stroke when manually operating the lifting handle, and a wobbling or even jamming sensation during lifting, further deteriorating the user experience and affecting the equipment's lifespan. In terms of functional expandability, existing headrest designs also have significant shortcomings. Their fixed structure or difficulty in complete removal means that insufficient space cannot be reserved for a shampoo basin when providing cleaning and care for bedridden elderly individuals, forcing caregivers to make unnecessary multiple transfers, increasing work complexity and potential risks.

[0004] In view of the comprehensive problems of existing manual mechanical reclining transfer machines, such as the difficulty in adjusting the backrest load, poor operating experience, lack of auxiliary assistance, and insufficient functional expandability, it is of great practical value to develop a new type of multifunctional reclining transfer machine optimized for manual operation. Utility Model Content

[0005] The purpose of this application is to overcome at least one deficiency of the existing technology and provide a multifunctional supine transfer machine suitable for elderly people or patients with limited mobility, with an improved backrest adjustment mechanism and head care function.

[0006] To achieve the above objectives, this application discloses a multifunctional supine transfer machine, which includes a chassis, a lifting device, a seat frame, and a gas spring assist device.

[0007] The chassis is equipped with multiple wheels at the bottom, and at least one wheel is equipped with a braking actuator. The lifting device includes a vertically arranged lifting column and at least one set of linear guide rod assemblies. The linear guide rod assemblies are arranged in parallel with the lifting column and are connected between the chassis and the base frame to enhance the stability and anti-eccentric load capacity of the lifting process and effectively suppress jamming or shaking caused by component wear due to long-term heavy use.

[0008] The seat frame is hinged to a leg support frame at the front and connected to a backrest frame at the rear via a hinge shaft. The backrest frame is a rigid frame structure, and a gas spring assist device is provided between it and the seat frame. The two ends of the device are connected to the seat frame and the backrest frame respectively via external hinges, providing initial assistance when adjusting the backrest angle and significantly reducing the manual operation effort.

[0009] Furthermore, the gas spring assist device includes at least one gas spring rod.

[0010] Furthermore, a detachable headrest is provided above the backrest frame. The headrest is connected to the backrest frame through a plug-in mechanism or a quick-locking device, which facilitates disassembly and provides installation space for nursing appliances such as shampoo basins.

[0011] Furthermore, a seat cushion is installed on the seat frame, and a removable independent block is provided in the middle of the seat cushion, which, when removed, forms an opening for fitting the toilet bowl.

[0012] Furthermore, a push handle is fixed at the rear of the backrest frame, and a control handle is installed at the push handle. The control handle is connected to the braking actuator on the chassis through a pull cable mechanism or a linkage mechanism, so that the operator can directly control the braking and release of the traveling wheels during the pushing process, realizing convenient operation for moving and parking.

[0013] Furthermore, a sliding backrest cushion is installed on the backrest frame. Even further, the backrest frame is equipped with a set of linear slide rails, which are fixedly connected to the back of the backrest cushion, allowing the backrest cushion to slide longitudinally along the backrest frame to achieve adaptive adjustment of the back support position.

[0014] As an optional technical solution, a tilting mechanism is provided between the backrest frame and the seat frame to achieve stepless or stepped adjustment of the backrest angle; another tilting mechanism is provided between the leg support frame and the seat frame to achieve stepless or stepped adjustment of the leg support angle.

[0015] Furthermore, the leg support frame is equipped with leg pads and foldable footrests.

[0016] Furthermore, the frame is equipped with a foldable wheel support rod.

[0017] Furthermore, the length of the pulley support rod is adjustable.

[0018] As an alternative, the seat frame is equipped with a linkage tilting mechanism that connects the backrest frame and the leg support frame. This allows the leg support to move in tandem when the backrest angle is adjusted, thus providing a more coordinated and comfortable support effect during changes in the user's posture.

[0019] Furthermore, this linkage tilting mechanism includes a set of main adjustment links connecting the backrest frame and the seat frame, and a set of driven links connecting the main adjustment links and the leg support frame. When the tilt angle of the backrest frame is manually adjusted, the displacement of the main adjustment links is transmitted to the leg support frame through the driven links, causing the leg support frame to change its angle accordingly, thus achieving coordinated movement between the backrest and the leg support. This linkage design ensures that the user maintains a natural physiological flexion posture during position changes, improving comfort and simplifying the adjustment process through a single operating point, significantly improving the efficiency and safety of nursing procedures.

[0020] By operating the aforementioned tilting mechanism, the backrest and leg support can be adjusted independently or in conjunction: when adjusted to a sitting position, both the backrest and leg support are tilted at a large angle or perpendicular to the ground, providing support for the user. When adjusted to a flat position, the backrest, seat, and leg support expand and adjust to the same or similar plane, forming a complete reclining surface, thus realizing the function of a bed.

[0021] Compared with the prior art, this application has at least one of the following beneficial technical effects: 1. By setting up a gas spring assist device in conjunction with a linear slide rail pair, it can provide initial assistance and reduce movement resistance when manually adjusting the backrest angle, which significantly reduces the operational intensity of caregivers and makes the body position adjustment process more effortless and stable. 2. The structure of parallel arrangement of linear guide rod assembly and lifting column enhances the anti-eccentric load capacity and motion stability of the lifting mechanism, and effectively suppresses the jamming and shaking phenomenon caused by wear due to long-term heavy use. 3. The detachable headrest design and the integrated tilting mechanism not only expand the operating space for bedside hair washing and other nursing functions, but also achieve coordinated movement of the backrest and leg support, improving user comfort and nursing efficiency.

[0022] The beneficial effects listed above are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementation methods will be further disclosed in the embodiments or other descriptive sections of this application. Attached Figure Description

[0023] A better understanding of various aspects of this disclosure will be achieved by reading the following detailed description in conjunction with the accompanying drawings. The positions, dimensions, and extents of the structures shown in the drawings, etc., do not always represent actual positions, dimensions, and extents. In the drawings: Figure 1 This is a schematic diagram of the structure of one embodiment disclosed in this application.

[0024] Figure 2 This is a schematic diagram of the structure of one embodiment disclosed in this application from another perspective.

[0025] Figure 3 This is a schematic diagram of the structure of one embodiment disclosed in this application after unfolding and transforming into a lying position. Detailed Implementation

[0026] The present disclosure will now be described with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure more complete and to fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments.

[0027] It should be understood that the same reference numerals denote the same elements in all the accompanying drawings. For clarity, the dimensions of certain features may be modified in the drawings.

[0028] It should be understood that the terminology used in this specification is for describing specific embodiments only and is not intended to limit this disclosure. All terms used in this specification (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. For the sake of brevity and / or clarity, techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail; however, where appropriate, such techniques, methods, and apparatus should be considered part of this specification.

[0029] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the relevant listed items.

[0030] See attached document Figures 1 to 3 This embodiment provides a specific implementation of a multifunctional supine position transfer machine. This machine is suitable for the safe transfer and position adjustment of users with limited mobility between beds, chairs, and during movement, and is especially suitable for home care and medical institutions. The following will provide a detailed description of its structural composition, connection relationships, and working principle.

[0031] The transfer machine mainly includes a chassis 1, a lifting device 2, a seat frame 3, and a gas spring assist device 4. The chassis 1 is located at the bottom of the overall structure, and multiple traveling wheels 33 are mounted underneath it. At least one traveling wheel 33 is equipped with a braking actuator 5 for moving and parking the entire vehicle. The lifting device 2 is vertically mounted on the chassis 1 and includes a lifting column 21 and at least one set of linear guide rod assemblies 22. These two components are arranged in parallel and jointly connect the chassis 1 and the seat frame 3, forming a stable lifting and guiding structure. The seat frame 3 is located above the lifting device 2. Its front part is connected to the leg support frame 6 via a hinge, and its rear part is connected to the backrest frame 7 via a hinge shaft.

[0032] In the chassis 1 section, the traveling wheels 33 can be a combination of omnidirectional and directional wheels, for example, omnidirectional wheels at the front and directional wheels at the rear, with a braking actuator 5 installed at the rear wheels. This braking actuator 5 can be connected to the control handle 91 via a cable or linkage, allowing nursing staff to directly control the braking state during movement, achieving rapid switching between moving and parking, significantly improving operational convenience and safety. The main body of the chassis 1 is typically constructed from high-strength steel pipe welding or aluminum alloy casting; its specific manufacturing process is existing technology and will not be elaborated here.

[0033] The lifting column 21 in the lifting device 2 can achieve its lifting function using electric push rods, hydraulic cylinders, or lead screw drives, and its power configuration and control system are conventional technologies in this field. The linear guide rod assembly 22 includes a guide rod and a sliding sleeve, which are fixed to the chassis 1 and the base frame 3 respectively. It works in parallel with the lifting column 21 and can effectively resist lateral forces caused by off-center loads, suppress swaying or jamming during lifting, and extend the service life of the equipment. This structure is particularly suitable for long-term heavy-duty working conditions, enhancing overall rigidity and movement stability.

[0034] The seat frame 3 primarily supports the user's weight, and a soft seat cushion 31 is installed on top of it. A removable independent block 32 is located in the center of the seat cushion 31; removing it creates an opening for placing a bedpan, meeting the nursing needs of bedridden defecation. The leg support frame 6 at the front of the seat frame 3 can be angled via another tilting mechanism, for example, using a wheeled support rod 10 as an adjustable linkage, achieving stepless or stepped adjustment of the leg support angle, enhancing user comfort.

[0035] Furthermore, the leg support frame 6 is equipped with a leg pad 61 and a foldable footrest 62. The leg pad 61 is typically made of soft and easy-to-clean polyurethane foam or a similar material and is secured to the frame of the leg support frame 6 by straps or buckles, providing comfortable support for the user's lower legs. The footrest 62 is hinged to the distal end of the leg support frame 6 and can be flipped and folded around the hinge axis. When the leg support frame 6 is adjusted to the use position, the footrest 62 can be unfolded and locked, providing stable support for the user's feet, preventing foot sagging, and improving comfort and safety. When the transfer machine is in storage or moving mode, the footrest 62 can be folded upwards, effectively reducing the overall space occupied by the equipment and facilitating passage and storage in narrow environments. This design further enhances the ergonomics and practicality of the transfer machine.

[0036] In this embodiment, the backrest frame 7 is a rigid frame structure, with a push handle 9 and a control handle 91 fixedly installed at its rear. The backrest frame 7 is connected to the seat frame 3 via a gas spring assist device 4.

[0037] Furthermore, a foldable wheeled support rod 10 is provided between the backrest frame 7 and the seat frame 3. One end of the support rod is hinged to the backrest frame 7, and its core function is to provide stable auxiliary support and linkage drive for the backrest frame 7 after it is unfolded to a horizontal angle. Even further, the wheeled support rod 10 adopts an adjustable length design, for example, by adjusting the extension and retraction of a threaded sleeve or by adjusting the position of a pin hole, so that its effective working length can be flexibly adjusted according to specific support height requirements.

[0038] Furthermore, the specific structure and working principle of the gas spring assist device 4 are as follows: The device includes at least one gas spring rod filled with high-pressure inert gas and oil. Both ends are connected to the supports of the seat frame 3 and the backrest frame 7 via external hinges, thus forming a stable assist mechanism. Its core working principle is that the pre-charged pressure inside the gas spring generates a constant thrust. This thrust is opposite in direction to the main resistance that the backrest frame 7 needs to overcome during unfolding (i.e., adjustment from a lying position to a sitting position), thus providing continuous initial assistance for the adjustment action, significantly reducing the operating force required by the caregiver, and making the backrest angle adjustment process more effortless, smooth, and controllable. The selection of the gas spring (such as rated thrust, stroke, etc.) needs to be matched according to the quality of the backrest frame 7 and the expected assist effect. The specific model selection and determination of the installation hinge point position are technical matters that can be completed by the technical personnel of this company through conventional calculations and experiments. The introduction of this device effectively improves the user experience of the product, and is particularly suitable for nursing scenarios requiring frequent position adjustments.

[0039] A detachable headrest 8 is provided above the backrest frame 7. It can be installed and removed by plugging or quick locking devices, making it easier to free up space when using personal care products such as shampoo basins. In addition, the backrest frame 7 is also equipped with a set of linear slide rails 72. The backrest cushion 71 is connected to the slide rails by a slider, which can slide longitudinally to adjust the back support height to meet the needs of users of different body types.

[0040] In a preferred embodiment, a linkage tilting mechanism is configured between the backrest frame 7 and the seat frame 3. This mechanism includes a main adjustment link connecting the backrest frame 7 and the seat frame 3, and a driven link connecting the main adjustment link and the leg support frame 6. When the backrest angle is manually changed, the main adjustment link shifts, driving the leg support frame 6 to rotate synchronously via the driven link. This achieves coordinated movement of the backrest and legs, allowing the user to maintain a natural flexed posture during position changes, improving comfort and reducing the difficulty of care procedures. This linkage mechanism significantly simplifies the adjustment process, enabling single-point control of multiple posture switching.

[0041] By operating the aforementioned adjustment mechanisms, this transfer machine can provide multi-position support from sitting to lying down. For example, in the sitting position, the backrest frame 7 and the leg support frame 6 are both at a large angle to the ground, providing stable sitting support; while when adjusted to the flat position, the backrest frame 7, seat frame 3 and leg support 6 expand and adjust to be close to the same plane, forming a continuous lying plane, which can be temporarily used as a nursing bed.

[0042] In summary, the multifunctional supine position transfer machine described in this embodiment significantly reduces operational load and improves motion stability through the cooperation of the gas spring assist device 4 and the linear guide rod assembly 22. Its detachable headrest 8 and linkage adjustment mechanism further expand its nursing functionality and comfort. Compared to existing transfer devices, this machine is particularly suitable for scenarios requiring frequent changes in body position and bedridden care, such as the daily care and hygiene cleaning of long-term bedridden patients. It can effectively reduce the workload of nursing staff and improve nursing efficiency and user experience.

[0043] It should be noted that the detailed description of the specific structure of the multifunctional flat-lying transfer machine in this embodiment is only to help those skilled in the art fully understand and implement the technical solution of this application, and is not intended to limit its scope of protection. For parts not described or disclosed in detail in this specification, such as, but not limited to, the specific model selection of the walking wheels 33, the parameters of the drive motor and control circuit of the lifting column 21, the specifications of the gas spring, the specific types of bearings or pins used in each hinge structure, and the conventional manufacturing processes and assembly methods of components such as the braking actuator 5, the linear guide rod assembly 22, and the linear slide rail pair 72, these are all contents that those skilled in the art can select and implement based on common knowledge, conventional technical means, or existing techniques. Those skilled in the art are fully capable of implementing and expanding the above-mentioned undisclosed technical details in various forms without creative effort, combined with common technical knowledge in the field. These conventional choices and variations should all be considered to fall within the scope of protection claimed in this application.

Claims

1. A multifunctional supine transfer machine, characterized in that, It includes a chassis, a lifting device, a seat frame, and a gas spring assist device; the bottom of the chassis is provided with multiple wheels, and at least one wheel is equipped with a braking actuator; The lifting device includes a vertically arranged lifting column and at least one set of linear guide rod assemblies. The linear guide rod assemblies are arranged in parallel with the lifting column and are connected together between the chassis and the base frame. The front of the seat frame is hinged to a leg support frame, and the rear is connected to the backrest frame via a hinge shaft. The backrest frame is a rigid frame structure, and a gas spring assist device is provided between it and the seat frame. The two ends of the device are connected to the seat frame and the backrest frame respectively by external hinges, providing initial assistance when adjusting the backrest angle.

2. The multifunctional supine transfer machine according to claim 1, characterized in that, The gas spring assist device includes at least one gas spring rod.

3. The multifunctional supine transfer machine according to claim 1, characterized in that, A detachable headrest is provided above the backrest frame, and the headrest is connected to the backrest frame through a plug-in mechanism or a quick-locking device.

4. A multifunctional supine position transfer machine according to claim 1, characterized in that, The seat frame is equipped with a cushion, and the cushion has a removable independent block in the middle, which, when removed, forms an opening for fitting the toilet bowl.

5. A multifunctional supine position transfer machine according to claim 1, characterized in that, A push handle is fixed at the rear of the backrest frame, and a control handle is installed at the push handle. The control handle is connected to the braking actuator on the chassis through a pull cable mechanism or a linkage mechanism.

6. A multifunctional supine position transfer machine according to claim 1, characterized in that, The backrest frame is equipped with a sliding backrest cushion.

7. A multifunctional supine position transfer machine according to claim 6, characterized in that, The backrest frame is equipped with a set of linear slide rails, which are fixed to the back of the backrest cushion, allowing the backrest cushion to slide longitudinally along the backrest frame.

8. A multifunctional supine position transfer machine according to claim 1, characterized in that, A tilting mechanism is provided between the backrest frame and the seat frame to achieve stepless or stepped adjustment of the backrest angle.

9. A multifunctional supine position transfer machine according to claim 1, characterized in that, A tilting mechanism is provided between the leg support frame and the seat frame to achieve stepless or stepped adjustment of the leg support angle.

10. The multifunctional supine transfer machine according to claim 1, characterized in that, The frame is equipped with a foldable wheeled support rod.

Images