Multifunctional wheelchair bed handrail structure and multifunctional wheelchair bed

Abstract

The utility model discloses a multifunctional wheelchair bed armrest structure and multifunctional wheelchair bed relates to medical equipment technical field, in order to solve the problem that current armrest assembly procedure is complex and high cost, this multifunctional wheelchair bed armrest structure includes armrest main part, and one end of armrest main part is equipped with first connecting structure, and first connecting structure is rotated and is connected with the second connecting structure on the mounting plate of the both sides of multifunctional wheelchair bed through damper, and the rotation axis of damper extends along the width direction of armrest main part, and the first connecting structure is equipped with the limiting structure for providing the limiting action to armrest main part between second connecting structure, and the both sides edges of one end of second connecting structure close to limiting structure are equipped with first limiting portion and second limiting portion respectively, and first limiting portion is used for limiting armrest main part to be in unfolded state, and second limiting portion is used for limiting armrest main part to be in folding state, and such setting makes the assembly procedure of armrest structure more simple and efficient, and reduces production cost.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and more specifically, to a multifunctional wheelchair bed armrest structure and a multifunctional wheelchair bed. Background Technology

[0002] With societal development and an aging population, an increasing number of people with disabilities require assistive devices such as wheelchair beds to improve their self-care abilities and quality of life. Multifunctional wheelchair beds, as a type of nursing device integrating multiple functions, are becoming increasingly important. To better meet the needs of people with disabilities, multifunctional wheelchair beds typically feature electronically controlled transformation capabilities, flexibly switching between bed and chair modes depending on the usage scenario. In chair mode, the person being cared for requires armrests for stable support, ensuring comfort and safety in their sitting posture; while in bed mode, to maintain a clean and spacious surface, the armrests need to be hidden under the bed surface by rotation, avoiding taking up extra space.

[0003] However, current handrail rotation limiting methods typically employ the addition of limiting pins or limiting blocks at the rotation endpoint to achieve the limiting function. While this method can meet usage requirements to some extent, it also adds extra materials such as limiting pins or blocks, complicating the handrail assembly process and increasing production costs.

[0004] Therefore, how to solve the problem of complex and costly existing handrail assembly steps is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a multifunctional armrest structure for wheelchair beds, which simplifies the assembly steps of the armrest structure and reduces production costs.

[0006] Another objective of this utility model is to provide a multifunctional wheelchair bed that includes the above-mentioned armrest structure for a multifunctional wheelchair bed, which has a simple structure and is easy to assemble.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A multifunctional wheelchair bed armrest structure includes an armrest body. One end of the armrest body is provided with a first connecting structure. The first connecting structure is rotatably connected to a second connecting structure provided on the mounting plates on both sides of the multifunctional wheelchair bed via a damper. The rotation axis of the damper extends along the width direction of the armrest body. A limiting structure is provided between the first connecting structure and the second connecting structure to provide a limiting effect on the armrest body. The two edges of the second connecting structure near the limiting structure are respectively provided with a first limiting part and a second limiting part. The first limiting part is used to limit the armrest body to be in an unfolded state, and the second limiting part is used to limit the armrest body to be in a folded state.

[0009] Preferably, the limiting structure includes two shock-absorbing pads arranged side by side along the height direction of the handrail body, and the shock-absorbing pads extend along the width direction of the handrail body.

[0010] Preferably, the second connection structure includes two bases arranged side by side. One end of the base is connected to the mounting plate, and the two sides of the other end of the base are respectively provided with a first limiting part and a second limiting part. The first limiting part is a right-angle chamfer structure, and the second limiting part is an arc-shaped rounded corner structure.

[0011] Preferably, the first connection structure includes two connecting seats arranged side by side, the two connecting seats being located outside the two bases, and the two connecting seats being connected by screws.

[0012] Preferably, the connecting seat includes an L-shaped seat body, which includes a first connecting part, a second connecting part, and a third connecting part connected in sequence. The first connecting part is detachably disposed on the handrail body, and a limiting step surface is formed between the first connecting part and the second connecting part to abut against the end face of the handrail body.

[0013] Preferably, the middle part of the second connecting part is provided with a step extending along the width direction of the handrail body, and the two opposite end faces of the step are provided with connecting holes for connecting the shock-absorbing pad.

[0014] Preferably, the shock-absorbing pad is an elastic element.

[0015] Preferably, the outer end face of the third connecting part near the mounting plate is a semi-circular arc surface, and the opposite end faces of the third connecting part and the base are provided with mounting grooves for mounting the damper, and the mounting grooves are provided with connecting holes.

[0016] Preferably, the damper is a unidirectional rotating damper.

[0017] A multi-functional wheelchair bed, comprising the armrest structure for a multi-functional wheelchair bed as described in any of the above claims.

[0018] The multifunctional wheelchair bed armrest structure provided by this utility model includes an armrest body. One end of the armrest body is provided with a first connecting structure. The first connecting structure is rotatably connected to a second connecting structure provided on the mounting plates on both sides of the multifunctional wheelchair bed through a damper. The damper can provide a buffering effect during rotation, effectively control the rotation speed of the armrest body, reduce the situation where the armrest body suddenly unfolds or folds due to external impact or user misoperation, and improve the safety of use. The rotation axis of the damper extends along the width direction of the armrest body, making the armrest body more stable during rotation. At the same time, it is also conducive to the compact layout of the overall structure and improves the space utilization rate.

[0019] A limiting structure is provided between the first and second connecting structures to limit the armrest body. This limiting structure precisely controls the rotation range of the armrest body, effectively preventing it from over-expanding or folding, thus avoiding user loss of balance due to accidental movement of the armrest body during use and providing more reliable safety. The second connecting structure has a first limiting part and a second limiting part on its two edges near the limiting structure. The first limiting part restricts the armrest body from being in the unfolded state, and the second limiting part restricts it from being in the folded state. In the unfolded state, the first limiting part prevents the armrest body from unfolding excessively outward, ensuring that the armrest body will not wobble or shift when the user leans against it, providing stable support. In the folded state, the second limiting part prevents the armrest body from folding excessively inward, ensuring that the armrest body fits snugly against the bed surface or storage location, preventing it from occupying too much space when not in use, and also preventing the armrest body from loosening or popping out due to external force in the folded state, improving the overall stability of the wheelchair bed.

[0020] The multifunctional wheelchair bed armrest structure designed in the above manner effectively limits the armrest body through the design of the second connecting structure. Compared with the prior art, by removing the limiting pin and the limiting block at the end of rotation, the assembly steps of related components are reduced, making the assembly steps of the entire armrest structure simpler and more efficient, and reducing the time and labor costs in the production process. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 A schematic diagram of the multifunctional wheelchair bed armrest structure provided by this utility model;

[0023] Figure 2 An exploded view of the armrest structure for the multifunctional wheelchair bed provided by this utility model;

[0024] Figure 3 This is a schematic diagram of the second connection structure provided by the present invention;

[0025] Figure 4 This is a schematic diagram of the first connecting structure provided by this utility model.

[0026] Figure label:

[0027] 1-Handrail body;

[0028] 2-First connecting structure, 21-First connecting part, 22-Second connecting part, 23-Third connecting part, 24-Limiting step surface, 25-Step part;

[0029] 3-Mounting plate;

[0030] 4-Second connecting structure, 41-First limiting part, 42-Second limiting part;

[0031] 5-Damper;

[0032] 6-Limiting structure. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] It should be noted that the directional terms such as "up" and "down" in the following text are defined based on the accompanying drawings in the instruction manual.

[0036] The core of this invention is to provide a multifunctional armrest structure for a wheelchair bed, simplifying the assembly steps and reducing production costs. Another core aspect of this invention is to provide a multifunctional wheelchair bed including the aforementioned armrest structure, which has a simple structure and is easy to assemble.

[0037] Please refer to Figure 1 , Figure 2 and Figure 3 A multifunctional wheelchair bed armrest structure includes an armrest body 1.

[0038] Specifically, one end of the armrest body 1 is provided with a first connecting structure 2. The first connecting structure 2 is rotatably connected to the second connecting structure 4 on the mounting plates 3 on both sides of the multi-functional wheelchair bed through a damper 5. The damper 5 can provide a buffering effect during rotation, effectively control the rotation speed of the armrest body 1, reduce the situation where the armrest body 1 suddenly unfolds or folds due to external impact or user misoperation, and improve the safety of use. The rotation axis of the damper 5 extends along the width direction of the armrest body 1, making the armrest body 1 more stable during rotation, and also conducive to the compact layout of the overall structure and improving space utilization.

[0039] A limiting structure 6 is provided between the first connecting structure 2 and the second connecting structure 4 to limit the movement of the handrail body 1. The limiting structure 6 can precisely control the rotation range of the handrail body 1, effectively preventing it from being over-extended or folded, and avoiding the user losing balance due to accidental movement of the handrail body 1 during use, thus providing a more reliable safety guarantee for the user. The second connecting structure 4 has a first limiting part 41 and a second limiting part 42 on both sides of its end near the limiting structure 6. The first limiting part 41 is used to limit the handrail body 1 to the extended state, and the second limiting part 42... Part 42 is used to limit the armrest body 1 in the folded state. In the unfolded state, the first limiting part 41 can prevent the armrest body 1 from unfolding outward too much, ensuring that the armrest body 1 will not shake or shift when the user leans against it, providing stable support for the user. In the folded state, the second limiting part 42 can prevent the armrest body 1 from folding inward too much, ensuring that the armrest body 1 fits tightly against the bed surface or storage position, avoiding it from taking up too much space when not in use, and at the same time preventing the armrest body 1 from loosening or popping out due to external force in the folded state, thus improving the stability of the entire wheelchair bed.

[0040] By setting the limiting structure 6, and the first limiting part 41 and the second limiting part 42 respectively restricting the handrail body 1 from being in the unfolded and folded states, the handrail body 1 is effectively prevented from excessively rotating or accidentally moving during use, thereby improving user safety and avoiding accidental injuries that may be caused by the instability of the handrail body 1. The first limiting part 41, the second limiting part 42 and the limiting structure 6 work together to precisely control the rotation range of the handrail body 1, effectively preventing it from being over-unfolded or over-folded, avoiding the user from losing balance due to the accidental movement of the handrail body 1 during use, thereby reducing the risk of accidental falls and providing users with more reliable safety protection.

[0041] The damper 5 provides cushioning during rotation, reducing the sudden unfolding or folding of the handrail body 1 due to external impact or user misoperation. This makes the connection between the handrail body 1 and the mounting plate 3 more stable. When the user leans on it or applies external force, it can effectively resist rotation, maintain the stability of the handrail body 1, and provide reliable support for the user. The synergistic effect of the limiting structure 6 and the damper 5 reduces the impact and shaking of the handrail body 1 during rotation, reduces wear between mechanical parts, thereby extending the service life of the entire handrail structure and reducing the frequency of maintenance and replacement.

[0042] The multifunctional wheelchair bed armrest structure designed in the above manner effectively limits the armrest body 1 through the design of the second connecting structure 4. Compared with the prior art, by removing the limiting pin and the limiting block at the end of rotation, the assembly steps of related components are reduced, making the assembly steps of the entire armrest structure simpler and more efficient, and reducing the time and labor costs in the production process.

[0043] In the above embodiment, the limiting structure 6 includes two shock-absorbing pads arranged side by side along the height direction of the handrail body 1, and the shock-absorbing pads extend along the width direction of the handrail body 1.

[0044] It should be noted that the two shock-absorbing pads effectively cushion the impact force generated during the rotation and use of the handrail body 1, reducing user discomfort and improving comfort. The shock-absorbing pads extend along the width of the handrail body 1, increasing the contact area and thus improving the stability of the handrail body 1 under different conditions, preventing wobbling or displacement during use. The two shock-absorbing pads are arranged side-by-side along the height of the handrail body 1, making the entire limiting structure 6 more compact, saving space, and facilitating the optimized layout of the overall structure.

[0045] In the above case, the second connecting structure 4 includes two bases arranged side by side. One end of the base is connected to the mounting plate 3, and the two sides of the other end of the base are respectively provided with a first limiting part 41 and a second limiting part 42. The first limiting part 41 is a right-angle chamfer structure, and the second limiting part 42 is an arc-shaped rounded corner structure.

[0046] Understandably, by providing a first limiting part 41 with a right-angle chamfer structure and a second limiting part 42 with an arc-shaped rounded corner structure at the other end of the base, the position of the handrail body 1 in both unfolded and folded states can be more effectively restricted, ensuring the stability and safety of the handrail body 1 in all states. The combination of the right-angle chamfer and the arc-shaped rounded corner provides a clear limiting point, allowing the handrail body 1 to stop accurately when rotated to a predetermined position, improving the precision and repeatability of operation. The design of two parallel bases and clear limiting parts simplifies the assembly process, reduces reliance on complex assembly tools or techniques, and helps to improve production efficiency and reduce costs.

[0047] Furthermore, the first connecting structure 2 includes two connecting seats arranged side by side, the two connecting seats being located outside the two bases, and the two connecting seats being connected by screws.

[0048] It should be noted that the two connecting seats are arranged side by side and located on the outer side of the two bases. This layout increases the lateral stability of the entire structure, making the handrail body 1 more robust during use and less prone to tilting or wobbling. The two connecting seats, connected by screws, simplify the assembly process, making production and assembly more convenient and faster, thus improving production efficiency. It also allows for quick disassembly of the connecting seats when maintenance or replacement is needed, facilitating regular inspections and necessary repairs of the handrail structure, reducing maintenance costs and time.

[0049] Please refer to Figure 4 The connecting seat includes an L-shaped seat body, which includes a first connecting part 21, a second connecting part 22 and a third connecting part 23 connected in sequence. The first connecting part 21 is detachably provided on the handrail body 1, and a limiting step surface 24 is formed between the first connecting part 21 and the second connecting part 22 to abut against the end face of the handrail body 1.

[0050] Understandably, the first connecting part 21 is pluggable to the handrail body 1 and connected by screws, improving the stability of the connection. The L-shaped seat design allows the first connecting part 21 to be connected to the handrail body 1 by plugging and unplugging, simplifying the installation process and making the installation and disassembly of the handrail body 1 more convenient and quick, thus improving assembly efficiency. The L-shaped seat design increases the structural stability, making the handrail body 1 less prone to displacement or deformation under external forces, improving the durability and reliability of the entire handrail structure. The limiting step surface 24 formed between the first connecting part 21 and the second connecting part 22 provides additional support, enhancing the connection strength between the handrail body 1 and the connecting seat, ensuring the stability and reliability of the handrail body 1 during use. The design of the limiting step surface 24 ensures precise alignment between the handrail body 1 and the connecting seat, improving positioning accuracy, making the handrail body 1 smoother during unfolding and folding, and reducing friction and wear.

[0051] Based on the above embodiment, the middle part of the second connecting part 22 is provided with a step part 25 extending along the width direction of the handrail body 1, and the two opposite end faces of the step part 25 are provided with connecting holes for connecting the shock-absorbing pad.

[0052] It should be noted that the step portion 25 extends along the width of the handrail body 1, providing a stable platform that makes the installation of the shock-absorbing pad more secure, ensuring that the shock-absorbing pad will not shift or fall off during the rotation of the handrail body 1. The connecting holes on the two opposite end faces of the step portion 25 provide reliable fixing points for the shock-absorbing pad, enhancing the connection strength between the shock-absorbing pad and the handrail structure, thereby improving the durability and reliability of the entire handrail structure. The stable installation and effective connection of the shock-absorbing pad improves the comfort and safety of the handrail body 1 during use, enhancing the user experience. The design of the step portion 25 makes the installation of the shock-absorbing pad more compact, helping to optimize the space utilization of the handrail structure, making the entire structure more compact and efficient. When the shock-absorbing pad needs to be replaced, the connecting holes on the step portion 25 make it easier to disassemble and reinstall the shock-absorbing pad, reducing maintenance costs and time. In addition, the design of the step portion 25 increases the structural strength of the second connecting portion 22, making the handrail body 1 more stable during rotation and positioning, reducing shaking or abnormal noise caused by structural instability.

[0053] In the above embodiments, the shock-absorbing pad is an elastic element.

[0054] Understandably, the elastic shock-absorbing pad effectively absorbs and cushions the impact force generated when the handrail body 1 rotates or is limited, reducing mechanical vibration and noise, thereby improving overall operational stability. Because the shock-absorbing pad is made of elastic material, it maintains good elasticity during repeated compression and release, which helps extend its service life and reduce replacement frequency due to wear. Furthermore, the elastic shock-absorbing pad provides additional protection when the handrail body 1 is accidentally impacted, preventing damage from strong impacts and thus improving the safety of the entire structure.

[0055] In a preferred embodiment, the outer end face of the third connecting part 23 near the mounting plate 3 is a semi-circular arc surface. The end faces of the third connecting part 23 and the base opposite each other are provided with mounting grooves for mounting the damper 5, and the mounting grooves are provided with connecting holes.

[0056] It should be noted that the outer end face of the third connecting part 23 near the mounting plate 3 is a semi-circular arc surface, which ensures a tight fit with the mounting plate 3, improves installation accuracy, and reduces errors during installation. The semi-circular arc surface design helps to disperse and reduce stress concentration during the connection process, thereby enhancing the stability and durability of the entire structure. Both the end faces of the third connecting part 23 and the base are provided with mounting grooves for installing the damper 5, simplifying the installation process and making the installation of the damper 5 more convenient and faster. The mounting grooves are provided with connecting holes, which can be used to fix the damper 5, ensuring that the damper 5 remains stable during the rotation of the handrail body 1, improving the fixing strength and reliability of the damper 5. By installing the damper 5 in the mounting groove, the rotation speed and shock absorption effect of the handrail body 1 can be effectively controlled, improving user comfort and safety. When maintenance or replacement of the damper 5 is required, the design of the mounting groove makes disassembly and reinstallation of the damper 5 more convenient, reducing maintenance costs and time.

[0057] In the above case, damper 5 is a unidirectional rotating damper.

[0058] Understandably, a unidirectional rotational damper provides damping force in only one direction of rotation. This helps control the rotation direction of the handrail body 1, ensuring it rotates smoothly in the predetermined direction and improving the controllability and accuracy of operation. When the handrail body 1 requires stable support, the unidirectional rotational damper can prevent the handrail body 1 from rotating or moving accidentally, thereby improving user safety, especially when it is necessary to lean on the handrail for support or movement.

[0059] In practical applications, the two bases are fixed to the mounting plate 3 by screws, the two ends of the two dampers 5 are screwed to the base and the connecting seat respectively, and then the two connecting seats are screwed together as a whole. Then the handrail body 1 is connected and assembled with the connecting seat, and finally the shock-absorbing pad is installed on the step part 25 of the connecting seat.

[0060] In summary, the multifunctional wheelchair bed armrest structure provided by this utility model allows for manual counter-clockwise rotation of the armrest body 1 during use. The armrest body 1 rotates about the axis of the damper 5, and at the endpoint, the upper shock-absorbing pad abuts against the second limiting part 42 on the upper surface of the base, achieving a limiting effect. Conversely, when rotating clockwise, the lower shock-absorbing pad abuts against the first limiting part 41 on the lower surface of the base, achieving a limiting effect. The entire structure is safe, simple, and stable.

[0061] This structure achieves the limiting function of the entire handrail body 1 through the flexible design of the base shape. The irregular shape of the base enables rotational limiting, and this integrated design reduces structural instability caused by gaps between multiple limiting components, making the handrail body 1 more stable and reliable during rotation and use, thus enhancing the overall quality and service life of the product. Compared to existing technologies, eliminating the limiting pins and the limiting block at the rotation endpoint reduces the assembly steps of related components, making the assembly process of the entire handrail structure simpler and more efficient, and reducing time and labor costs in the production process. The elimination of the need for additional limiting pins and blocks reduces raw material procurement costs and the processing and assembly costs associated with adding components.

[0062] In addition to the armrest structure for the multifunctional wheelchair bed disclosed in the above embodiments, this utility model also provides a multifunctional wheelchair bed including the above-mentioned armrest structure for the multifunctional wheelchair bed. For the structure of other parts of the multifunctional wheelchair bed, please refer to the prior art, which will not be described in detail here.

[0063] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0064] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0065] The above provides a detailed description of the armrest structure for a multifunctional wheelchair bed and the multifunctional wheelchair bed itself, as provided by this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A multifunctional armrest structure for a wheelchair bed, comprising an armrest body (1), characterized in that, One end of the armrest body (1) is provided with a first connecting structure (2). The first connecting structure (2) and the second connecting structure (4) provided on the mounting plates (3) on both sides of the multifunctional wheelchair bed are rotatably connected by a damper (5). The rotation axis of the damper (5) extends along the width direction of the armrest body (1). A limiting structure (6) for providing a limiting effect on the armrest body (1) is provided between the first connecting structure (2) and the second connecting structure (4). The two sides of the second connecting structure (4) near the limiting structure (6) are respectively provided with a first limiting part (41) and a second limiting part (42). The first limiting part (41) is used to limit the armrest body (1) to be in an unfolded state, and the second limiting part (42) is used to limit the armrest body (1) to be in a folded state.

2. The armrest structure for a multifunctional wheelchair bed according to claim 1, characterized in that, The limiting structure (6) includes two shock-absorbing pads arranged side by side along the height direction of the handrail body (1), and the shock-absorbing pads extend along the width direction of the handrail body (1).

3. The armrest structure for a multifunctional wheelchair bed according to claim 2, characterized in that, The second connection structure (4) includes two bases arranged side by side. One end of the base is connected to the mounting plate (3). The two sides of the other end of the base are respectively provided with the first limiting part (41) and the second limiting part (42). The first limiting part (41) is a right-angle chamfer structure, and the second limiting part (42) is an arc-shaped rounded corner structure.

4. The armrest structure for a multifunctional wheelchair bed according to claim 3, characterized in that, The first connection structure (2) includes two connecting seats arranged side by side, the two connecting seats being located outside the two bases, and the two connecting seats being connected by screws.

5. The armrest structure for a multifunctional wheelchair bed according to claim 4, characterized in that, The connecting seat includes an L-shaped seat body, which includes a first connecting part (21), a second connecting part (22) and a third connecting part (23) connected in sequence. The first connecting part (21) is detachably provided on the handrail body (1). A limiting step surface (24) is formed between the first connecting part (21) and the second connecting part (22) to abut against the end face of the handrail body (1).

6. The armrest structure for a multifunctional wheelchair bed according to claim 5, characterized in that, The second connecting part (22) has a step part (25) extending along the width direction of the handrail body (1) in the middle. Both opposite end faces of the step part (25) are provided with connecting holes for connecting the shock-absorbing pad.

7. The armrest structure for a multifunctional wheelchair bed according to claim 6, characterized in that, The shock-absorbing pad is an elastic element.

8. The armrest structure for a multifunctional wheelchair bed according to claim 7, characterized in that, The outer end face of the third connecting part (23) near the mounting plate (3) is a semi-circular arc surface. The opposite end faces of the third connecting part (23) and the base are provided with mounting grooves for mounting the damper (5). The mounting grooves are provided with connecting holes.

9. The armrest structure for a multifunctional wheelchair bed according to any one of claims 1-8, characterized in that, The damper (5) is a unidirectional rotating damper.

10. A multifunctional wheelchair bed, characterized in that, Includes the armrest structure for a multifunctional wheelchair bed as described in any one of claims 1-9.

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