Swing for use by lower extremity disabled person

Abstract

The present application relates to the technical field of swing, and particularly relates to a swing convenient for lower limb disabled person to use. The swing convenient for lower limb disabled person to use comprises a main support, a seat assembly suspended on the support through a swing rope, a counterweight assembly comprising a counterweight and a counterweight box, the counterweight box being installed on the back of the seat assembly, and the counterweight being located in the counterweight box, a traction rope with one end connected with the counterweight, and a pulley assembly, the end of the traction rope away from the counterweight passing through the pulley assembly, the pulley assembly being configured to pull the counterweight up when the end of the traction rope away from the counterweight is pulled down, and the counterweight falling back when the upward pulling force of the counterweight on the traction rope is less than the component force of the gravity of the counterweight in the direction of the rope. The present application can be used by lower limb disabled person independently without the assistance of others.

Description

Technical Field

[0001] This invention relates to the field of swing technology, and more particularly to a swing that is convenient for people with lower limb disabilities to use. Background Technology

[0002] Swings, as common outdoor recreational and rehabilitation training facilities, typically rely on the user's coordinated body movements during the swing to achieve initiation and amplification. A typical usage process includes getting on the swing, initiation, swinging higher and higher, and braking. Initiation and amplification often depend on the cyclical changes in the center of gravity caused by the lower limbs pushing off the ground or extending and retracting the legs to continuously input energy, thereby gradually increasing the swing amplitude.

[0003] However, for people with lower limb mobility impairments, the above process presents significant obstacles. First, the seat is prone to swaying in its natural suspension state, and users lack stable support when transferring from a wheelchair or standing aid to the seat, posing a risk of falling. Second, due to the difficulty in performing push-off to initiate the swing or adjusting the leg swing amplitude, users find it difficult to initiate the swing and increase the swing amplitude without assistance. Third, traditional methods of braking or controlling the swing amplitude by touching the ground with the feet are unusable for people with lower limb disabilities, leading to difficulties in stopping and safe control.

[0004] Existing swings or assistive devices designed for special populations mostly improve sitting stability by adding safety belts, raising guardrails, or widening seats, or rely on caregivers to push or pull to achieve swinging and amplification. While these solutions improve sitting safety to some extent, they still suffer from high reliance on external human intervention, low swinging and amplification efficiency, and insufficient user participation. Some electrically driven swings use motors or actuators to force the swing, which reduces reliance on human intervention, but the system structure is complex, the cost is high, and the requirements for power supply, protection, and maintenance are even greater in outdoor environments, making them unsuitable for widespread application in common public places. Summary of the Invention

[0005] In view of this, embodiments of the present invention provide a swing that is convenient for people with lower limb disabilities to use, in order to solve the technical problem that existing swings are inconvenient for people with lower limb disabilities to use independently without the assistance of others.

[0006] In a first aspect, the present invention provides a swing that is convenient for use by people with lower limb disabilities, comprising: Main support; The seat assembly is suspended from the bracket by a swing rope; A counterweight assembly includes a counterweight component and a counterweight box, the counterweight box being mounted on the back of the seat assembly, and the counterweight component being located within the counterweight box; The traction rope is connected at one end to the counterweight. A pulley assembly is provided, wherein the end of the traction rope away from the counterweight passes through the pulley assembly, and the pulley assembly is configured such that when the end of the traction rope away from the counterweight is pulled downward, the counterweight is pulled upward; and when the upward pulling force on the counterweight on the traction rope is less than the component of the counterweight's weight in the direction of the rope, the counterweight falls back.

[0007] Preferably, the seat assembly includes a seat body and a pusher, the pusher being rotatably connected to the seat body; When the swing is in a fixed state, the bottom of the booster is bonded and fixed to the surface of the object supporting the swing by an adhesive component; When the pusher rotates from its fixed position under the action of an external force in a direction that causes the adhesive to separate from the surface of the object being bonded, the friction generated when the adhesive separates pushes the seat assembly to move.

[0008] Preferably, the seat assembly further includes a fulcrum armrest, which is rotatably connected to the seat body; When the swing is in a fixed state, the fulcrum armrest is in the first position and is locked to the seat body by the locking mechanism; When the swing is in use, the fulcrum armrest is in the second position and locked to the seat body by the locking mechanism.

[0009] Preferably, the seat assembly further includes a main armrest, which is rotatably connected to the seat body; When the swing is in a fixed state, the main armrest is in the third position and locked to the seat body by the locking mechanism; When the swing is in use, the main armrest is in the fourth position and locked to the seat body by a locking mechanism.

[0010] Preferably, the seat assembly further includes a swivel support, which is disposed on the seat body. The main armrest is rotatably connected to the seat body via the swivel support, and the fulcrum armrest and the push-up member are both connected to the main armrest. Preferably, the seat assembly further includes a footrest, which extends downward from the lower part of the seat body to a preset length and then gradually transitions to extending forward.

[0011] Preferably, the pulley assembly includes a first fixed pulley and a force-saving pulley group, the traction rope includes a first pull rope and a second pull rope, the first fixed pulley is installed on the back of the seat assembly, one end of the first pull rope is connected to the counterweight, and the other end is connected to the input end of the force-saving pulley group, the force-saving pulley group is configured such that when the second pull rope pulls the force-saving pulley group, the displacement of the end of the first pull rope is half of the displacement of the end of the second pull rope.

[0012] Preferably, the labor-saving pulley block includes a movable pulley and a second fixed pulley. The second fixed pulley is mounted on the main support. One end of the second pull rope is connected to the second fixed pulley, and the other end passes through the guide grooves of the movable pulley and the second fixed pulley in sequence and extends towards the seat assembly.

[0013] Preferably, the swing further includes a force-sharing component, and the traction rope further includes a third pull rope and a fourth pull rope. The middle part of the force-sharing component is connected to the end of the second pull rope away from the movable pulley, and one end of the third pull rope and the fourth pull rope are respectively connected to the opposite ends of the force-sharing component.

[0014] Preferably, the swing ropes include at least a first swing rope and a second swing rope, one end of the first swing rope and the second swing rope are respectively connected to opposite ends of the seat assembly, and the other end of the first swing rope and the second swing rope are connected to the main support. The swing also includes a first pull handle and a second pull handle, the first pull handle is attached to the first swing rope, the second pull handle is attached to the second swing rope, the first pull handle is connected to the third pull rope, and the second pull handle is connected to the fourth pull rope.

[0015] In summary, the beneficial effects of the present invention are as follows: The swing provided by this invention, which is convenient for people with lower limb disabilities, features a counterweight box on the back of the seat assembly with a vertically movable counterweight inside. This, along with a traction rope and pulley assembly, forms a counterweight lifting mechanism that can be driven by hand force. This allows the user to move the counterweight upwards simply by pulling the traction rope downwards, without needing to push off the ground or extend or retract their legs. This changes the mass distribution and center of gravity of the swing system, continuously inputting energy into the swing and increasing the swing amplitude, thus improving the feasibility of independent swinging and amplitude for people with lower limb disabilities. Simultaneously, when the user stops pulling or reduces the pulling force, the pulley assembly ensures that the upward pulling force on the counterweight on the traction rope is less than the component of the counterweight's weight in the rope direction, allowing the counterweight to automatically fall back and reset. This makes the counterweight adjustment a repeatable reciprocating process, reducing operational complexity and avoiding control instability caused by the counterweight remaining in an unfavorable position. Therefore, it achieves a safer and easier-to-use autonomous swinging experience with a relatively simple structure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of the present invention.

[0017] Figure 1 This is a three-dimensional structural diagram of the swing of the present invention, which is designed for use by people with lower limb disabilities.

[0018] Figure 2 This is a front view of the swing of the present invention, designed for use by people with lower limb disabilities.

[0019] Figure 3 This is a schematic diagram of the main support structure in this invention.

[0020] Figure 4 This is a schematic diagram of the user pulling down the traction rope to raise the counterweight in this invention.

[0021] Figure 5 This is a schematic diagram of the user releasing the traction rope to rise and drive the counterweight to fall in this invention.

[0022] Figure 6 This is a side view of the counterweight rising when the user pulls down the traction rope in this invention.

[0023] Figure 7 This is a schematic diagram of the user releasing the traction rope to rise and drive the counterweight to fall in this invention.

[0024] Figure 8 This is a schematic diagram of the swing of the present invention in normal use, which is designed for use by people with lower limb disabilities.

[0025] Figure 9 This is a structural schematic diagram of the seat assembly in this invention.

[0026] Figure 10 This is a schematic diagram of the counterweight component in this invention.

[0027] Figure 11 This is a schematic diagram of the swing in the locked state according to the present invention.

[0028] Figure 12 This is a schematic diagram of the swing starting process in this invention.

[0029] Figure 13 This is a diagram showing the relationship between the traction rope and pulley assembly in this invention.

[0030] Figure 14 This is a schematic diagram of the pulley assembly in this invention.

[0031] Figure 15 This is a diagram showing the swing parameters for users of different weights in this invention.

[0032] Figure 16 This is a diagram showing the dimensional parameters of the counterweight box in this invention.

[0033] The components and their numbers shown in the picture: Main support 100, first support assembly 110, second support assembly 120, first support rod 111, second support rod 112, crossbeam 130, seat assembly 200, seat body 210, seat plate 211, back support 212, back panel 213, bottom support 214, main armrest 220, pusher 230, fulcrum armrest 240, adhesive component 600, counterweight assembly 300, counterweight box 310, counterweight component 311, first fixed pulley 410, labor-saving pulley group 430, movable pulley 431, second fixed pulley 432, traction rope 440, first pull rope 441, second pull rope 442, third pull rope 443, fourth pull rope 444, force distribution component 700, footrest 810, first swing rope 1010, second swing rope 1020, first pull handle 1030, second pull handle 1040. Detailed Implementation

[0034] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the invention.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0036] It should be noted that all actions involving the acquisition of signals, information, or data in this invention are carried out in compliance with the relevant data protection laws and regulations of the locality and with authorization from the owner of the relevant device.

[0037] Example 1 like Figure 1 and Figure 2As shown, this embodiment provides a swing that is easy for people with lower limb disabilities to use. The swing includes a main support 100, a seat assembly 200, a swing rope, a counterweight assembly 300, a traction rope 440, a pulley assembly, and a locking mechanism that cooperates with the main handrail 220.

[0038] like Figure 3 As shown, the main support 100 provides a suspension and load-bearing foundation for the swing, and can be understood as the skeleton frame of the entire device, such as an A-type or gantry-type support set on the ground. In this embodiment, the main support 100 includes a crossbeam 130 and a pair of support components. The crossbeam 130 provides the upper suspension position of the swing rope, and the support components transfer the load of the crossbeam 130 to the ground. Each support component consists of a first support rod 111 and a second support rod 112, which are connected at the top and separated at the tail end at a preset angle to form a triangular support structure. The triangular structure can maintain geometric stability under the horizontal component force and torque caused by the reciprocating swing of the swing, reducing the risk of the support swaying left and right or tipping over.

[0039] The seat assembly 200 is suspended on the bracket by a swing rope; the swing rope can be a steel wire rope, fiber rope or chain, with its two ends connected to the crossbeam 130 and the seat assembly 200 respectively, so that the seat assembly 200 can swing periodically around the suspension point; the seat assembly 200 carries the user and serves as the main mass block of the swing system, which determines the swing response and comfort.

[0040] The seat assembly 200 supports the user and serves as the main mass block of the swing system, determining the swing response and comfort. The configuration component 300 is disposed on the seat assembly 200. In a preferred embodiment, the counterweight assembly 300 is arranged on the back of the seat assembly 200, including a counterweight box 310 and a counterweight 311. The counterweight box 310 acts as a vertical guide cavity, used to accommodate and constrain the movement trajectory of the counterweight 311. The counterweight 311 is cylindrical, facilitating vertical lifting and lowering and preventing tilting. Figure 10 As shown, the counterweight box 310 has a triangular cross-section and its inner contour gradually increases and then decreases from top to bottom. It can form an inlet at the top to reduce the impact of assembly deviation on smooth movement, provide effective travel space for the counterweight 311 in the middle, and form a limiting and centering guide area at the bottom to suppress lateral collisions when the counterweight 311 swings, thereby improving lifting stability and reducing the probability of jamming.

[0041] One end of the traction rope 440 is connected to the counterweight 311. The traction rope 440 can be a nylon rope, steel wire rope, or covered rope, and its function is to convert the user's manual operation into the lifting drive of the counterweight 311; for example... Figure 4 and Figure 5As shown, the pulley assembly allows the traction rope 440 to pass through and changes the direction of force. When the end of the traction rope 440 away from the counterweight 311 is pulled downwards, the traction rope 440 reverses direction at the pulley and generates an upward traction force on the counterweight 311, causing the counterweight 311 to move upwards within the counterweight box 310. Figure 6 and Figure 7 As shown, when the user stops pulling or reduces the pulling force, if the upward pulling force on the traction rope 440 on the counterweight 311 is less than the component of the weight of the counterweight 311 in the rope direction, the counterweight 311 will automatically fall back and reset under the action of gravity, avoiding the counterweight from staying at the top for a long time and causing the center of gravity to be continuously offset. At the same time, it ensures that the next pull has consistent starting conditions and improves the safety of operation.

[0042] like Figure 8 As shown, the upward movement of the counterweight 311 changes the mass distribution on the back of the seat assembly 200, causing the center of gravity of the swing system to change with the height of the counterweight. During the swing cycle, the counterweight 311 is repeatedly raised and lowered by repeatedly pulling down and releasing the traction rope 440. This allows for energy input and amplitude modulation of the swing process without relying on the lower limbs to push off the ground or extend and retract the legs, thereby helping people with lower limb disabilities to swing higher and higher after the swing begins. In order to achieve a rapid swing, the user can pull down the traction rope to raise the counterweight when the swing reaches the lowest point and release the traction rope when the swing reaches the highest point.

[0043] The locking mechanism includes an unlocking component located at the rotation axis of the main handrail 220. The unlocking component is either a button or a lever. It is designed to release the locking state of the main handrail 220 when triggered by external force and automatically re-lock when the main handrail 220 rotates to a preset position, thus achieving automatic locking. The locking mechanism is located at the rotation axis of the main handrail 220, and the unlocking component is in the form of a button or lever, such as a spring-reset button or a lever-type unlocking component. The user can release the main handrail 220 by triggering the unlocking component to complete the handrail position switching. After the main handrail 220 rotates to the preset position, the locking mechanism automatically re-locks, thus providing a stable gripping point for the user during swinging, posture adjustment, and swinging operations. This reduces the risk of instability caused by free swinging of the handrail and, in conjunction with the counterweight lifting mechanism, improves the feasibility and safety of independent use of the swing by people with lower limb disabilities.

[0044] The preset position is the position where the main armrest 220 rotates to a preset angle relative to the position when the swing is in a fixed state. The preset angle can be about 45 degrees.

[0045] When the swing switches from the use state to the fixed state, the main handrail 220 is locked in the third position under the action of the locking mechanism, and the pusher 230 is rotated by the main handrail 220 to a position where the adhesive 600 is re-adheded and fixed to the surface of the object supporting the swing.

[0046] The locking mechanism is configured to restrict the reverse rotation of the main armrest 220 when the main armrest 220 is locked in the third position, so as to keep the adhesive 600 in a fixed state of continuous adhesion to the surface of the object.

[0047] like Figure 9 As shown, the seat assembly 200 includes a seat body 210 and a booster 230, the booster 230 being rotatably connected to the seat body 210; The seat body 210 is a load-bearing component for the user to sit on, and may include a seat plate 211, a backrest plate 213, and its support frame, used to transfer the user's weight and swing load to the swing rope and form a stable sitting posture. The booster 230 is rotatably connected to the seat body 210. The booster 230 is a flip-up support component located under or behind the seat, such as a rod-shaped or U-shaped flip-up bracket. Its rotatable connection allows the booster 230 to switch positions between a fixed state and a use state, thereby performing different functions in different stages. In a fixed state, the bottom of the pusher 230 is bonded to the surface of the object supporting the swing via the adhesive 600. The adhesive 600 can be a nylon hook and loop fastener, a rubber anti-slip sticker, or an adhesive structure with re-adhesive properties. The supporting surface can be the ground, a platform, or a paved base. The velvet material of the nylon hook and loop fastener can be provided on the supporting surface to cooperate with the nylon hook and loop fastener as the adhesive 600. This allows the seat assembly 200 to remain relatively still when the user gets on the swing or adjusts their posture, reducing the difficulty of getting on the chair and the risk of falling caused by the free swing of the chair.

[0048] like Figure 11 and Figure 12 As shown, when the swing is in a fixed state, the bottom of the pusher 230 is bonded to the surface of the object supporting the swing via the adhesive 600. When the pusher 230 rotates from its fixed position under the action of an external force in a direction that separates the adhesive 600 from the surface of the bonded object, the reaction force generated by the resistance when the adhesive 600 separates gives the seat assembly initial momentum, thereby pushing the seat assembly 200 to move. This process can utilize the lever rotation arc of the pusher 230 to generate a backward horizontal component force acting on the ground during the peeling process, thereby generating a reverse forward thrust on the seat.

[0049] like Figure 12As shown, when swinging is required, the user applies an external force to the booster 230, causing it to rotate from its fixed position in the separation direction. During the separation process, the adhesive 600 and the bearing surface undergo a gradual peeling process from strong adhesion. In the initial stage of this peeling process, the adhesive 600 remains in contact with the bearing surface and generates significant frictional resistance. The direction of this frictional resistance is opposite to the relative motion trend of the booster 230, which is equivalent to applying a tangential pushing force along the swing direction to the seat assembly 200, allowing the seat assembly 200 to gain initial speed and enter the swinging state without the need for the lower limbs to push off the ground. As the booster 230 continues to rotate, the adhesive 600 detaches completely, and the seat assembly 200 enters the normal suspension swinging process, avoiding energy loss caused by continuous dragging of the ground. Through this fixed-and-separated conversion mechanism, this embodiment integrates the stable support required for the swing-on stage and the initial push required for the swing-up stage into the same pusher 230 and adhesive component 600 structure. This improves the operability for lower limb disabled users to independently get on and off the swing, and utilizes the friction during separation to achieve controllable swinging. Users can independently release the seat assembly 200 from the ground and start swinging by simply rotating the assistive component, thus reducing reliance on others' pushing or pulling or external power and improving safety. This allows lower limb disabled users to easily complete the swing-up process without assistance. Before getting on the swing, the wheelchair should be parked in a place that is out of reach of the swinging swing but within easy reach. To get off the swing, simply stop pulling the counterweight, wait for the swing to slowly stop, rotate and lock the armrests, and re-secure the Velcro.

[0050] The aforementioned simple control method allows the seat assembly 200 to switch from a locked state to an unlocked state while the swing starts to swing. This avoids the seat shaking before the swing starts, which would affect the user getting on the swing and adjusting their posture. It also avoids the seat assembly 200 remaining locked while the swing is starting, thus preventing the user from starting the swing without assistance.

[0051] The adhesive component 600 is a Velcro fastener. Velcro is a reusable fastener formed by the combination of a hook and a fleece side, allowing for multiple adhesions and peels without the need for complex tools. It is suitable for situations where a swing needs to switch between a fixed and usable state. To achieve reliable adhesion, an adhesive surface can be provided on the ground for bonding with the Velcro fastener.

[0052] Alternatively, the ground can be made of the same material as the Velcro, and the booster can serve as the two sides of the Velcro, allowing them to adhere together.

[0053] By designing the Velcro as a triangular prism, it not only provides adhesion but also serves as a geometric guide and force distribution mechanism. When the bottom surface of the triangular prism is attached to the surface of the object supporting the swing, it forms a large effective contact area to improve adhesion stability. The side surface of the triangular prism forms a progressive peeling boundary when the pusher 230 rotates and peels off, allowing the Velcro to gradually detach from one side rather than detaching instantly. This makes it easier to obtain a more stable and sustainable frictional force output in the initial stage of separation, which is beneficial to the smoothness and controllability of the swing process.

[0054] The booster component 230 adopts a U-shaped structure, including a bottom connecting rod and two top connecting rods on both sides. The bottom connecting rod is located near the ground or bearing surface and is used to engage with the triangular prism nylon fastener and serve as the ground contact end. The two top connecting rods are respectively located on both sides of the seat body 210 and form a rotatable connection with the seat body 210 at the end away from the bottom connecting rod. This U-shaped arrangement allows the booster component 230 to rotate synchronously with both sides as fulcrums when rotating, avoiding deflection and jamming caused by unilateral rotation, ensuring that the peeling direction of the adhesive component 600 is consistent, and the output frictional pushing force is more stable. At the same time, the rotatable connection on both sides allows the booster component 230 to form a support for the seat assembly 200 from below when fixed, suppressing the swaying of the seat during the swing stage, and can be lifted away from the bearing surface when in use, reducing energy loss caused by friction with the ground. By combining the reusable adhesion of Velcro, the progressive peeling characteristics of the triangular prism, and the symmetrical rotation structure of the U-shaped booster 230, this embodiment integrates the two requirements of fixation and swinging into the same mechanism without relying on the lower limbs to push off the ground. This improves the safety and convenience of independent operation for people with lower limb disabilities and makes the swinging process smoother and more controllable.

[0055] The seat body 210 consists of a bottom support 214, a seat plate 211, a back support 212, and a backrest 213. The bottom support 214 supports the seat plate 211 and connects to the swing rope, thereby reliably transferring the user's weight and swing load to the suspension system. The seat plate 211 is mounted on the bottom support 214 to form the main seating surface, facilitating stable sitting posture for users with lower limb disabilities. The backrest 213 is mounted on the front side of the back support 212 to provide support for the user's back. Structurally, the back support 212 extends upward beyond the preset height of the backrest 213 and then extends downward and backward, forming a suspended end located behind the backrest 213 and maintaining a preset distance from it. This bent and extended end of the back support 212 provides installation space for the rear mechanism and maintains a safe distance between the rear mounting components and the user's back, preventing the traction rope 440 or pulley from getting close to the body and causing interference and friction.

[0056] like Figure 2 and Figure 13As shown, the first fixed pulley 410 is installed at the end of the back support 212. The first fixed pulley 410 is a guide pulley in the pulley assembly. Its guide groove is used to limit and change the direction of the traction rope 440, so that after the traction rope 440 is led out from the counterweight 311, it can turn along the end of the back support 212 to a direction more suitable for hand operation. By arranging the first fixed pulley 410 at the end of the back support 212, the lead position of the traction rope 440 can be guided to the side away from the user's body or the operating area in front of the seat, reducing the risk of the traction rope 440 getting tangled with the back panel 213, clothing, or arms; at the same time, the constraint of the guide groove on the traction rope 440 makes the traction rope 440 maintain a relatively stable direction when under force, reducing the lateral swing of the rope caused by the swing, and ensuring that the direction of the force when the user pulls down the traction rope 440 is closer to the vertical direction, so that the traction rope 440 can more effectively pull the counterweight 311 upward and promote the smooth rise and fall of the counterweight 311 in the counterweight box 310. Through the above structural arrangement, the seat body 210 provides stable human support and load transmission, and also provides clearance and guide fulcrum for the layout of the traction rope 440 and pulley, so that the lower limb disabled person can pull the traction rope 440 more easily and safely and realize the controllable lifting and lowering of the counterweight 311 during the higher swinging stage.

[0057] like Figure 9 As shown, the seat assembly 200 also includes a fulcrum armrest 240, which is rotatably connected to the seat body 210; The fulcrum armrest 240 is a support component for users to grab and use for leverage. For example, it can be an armrest bar located on both sides of the seat or a flip-up armrest frame. Its rotatable connection allows the fulcrum armrest 240 to switch to different postures under different working conditions. The first position of the fulcrum armrest 240 corresponds to the swing being in a fixed state. At this time, the fulcrum armrest 240 is locked to the seat body 210 by a locking mechanism, so that the fulcrum armrest 240 and the seat body 210 form a relatively rigid support relationship. When the user is on the swing, the fulcrum armrest 240 can be used as a stable fulcrum to support the body, complete the transfer from the wheelchair to the seat, or adjust the sitting posture, and prevent the armrest from rotating freely during the swing, which would cause the support to fail. The second position of the fulcrum armrest 240 corresponds to the swing being in use. At this time, it is also locked by a locking mechanism to ensure that the fulcrum armrest 240 remains a stable and grippable hand support point during the swing and pulling of the traction rope 440, reducing the impact of hand force on the swing armrest swing and affecting the control of movement.

[0058] By locking the fulcrum armrest 240 in two positions, the safety support requirements during the swing phase and the stability grip requirements during the usage phase are separated: In the fixed state, the seat assembly 200 is fixed to the ground by the pusher 230 and the adhesive 600. After the fulcrum armrest 240 is locked in the first position, it forms a more reliable upper chair support structure, reducing the risk of falling due to seat swaying and unstable grip; After entering the usage state, the fulcrum armrest 240 switches and locks in the second position, so that it avoids the operating area of ​​the main armrest 220 and the traction rope 440. This does not affect the normal swing after the pusher 230 is detached, and it also makes it easy for the user to continuously pull the traction rope 440 after the swing starts to lift the counterweight and swing higher and higher. At the same time, it can still provide a stable grip point to assist in posture control when it is necessary to reduce the swing amplitude or stop.

[0059] In terms of specific implementation, the fulcrum armrest 240 can be configured as two symmetrical armrest bars or an integrated U-shaped armrest frame. Its rotatable connection to the seat body 210 can be achieved through a pivot hinge, pin hinge, or bushing structure. The locking mechanism can employ a spring pin positioning, pin-type locking, pawl-ratchet self-locking, or button / lever unlocking positioning structure. Positioning holes, positioning grooves, or limiting surfaces are respectively provided at the first and second positions to achieve reliable locking. For example, a first positioning hole and a second positioning hole can be provided on the seat body at locations corresponding to the first and second positions. A connector is provided on the fulcrum armrest, rotatably connected to the fulcrum armrest and connected to it via a spring. The end of the lever is connected to the connector. When rotated to the first or second position, the connector is inserted into the positioning hole under the restoring force of the spring, achieving reliable locking. When the lever is moved, the connector overcomes the elastic force of the spring and rotates away from the positioning hole. When it rotates to the position where it is disengaged from the positioning hole, unlocking is achieved.

[0060] Through the above technical features, the fulcrum handrail 240 provides rigid support in a fixed state to enable people with lower limb disabilities to independently get on the swing, and provides a stable grip point in use to assist in swing control and traction operation after the swing starts, thereby improving the overall safety and convenience of use without increasing external human dependence.

[0061] like Figure 9 and Figure 12As shown, the seat assembly 200 also includes a main armrest 220, which is rotatably connected to the seat body 210. The main armrest 220 is a support component for the user to grip, such as a rotatable armrest frame located on both sides of the seat. Its rotatable connection with the seat body 210 allows the main armrest 220 to switch between a fixed state and a usage state. The third position of the main armrest 220 corresponds to the swing being in a fixed state, where the main armrest 220 is positioned closer to the back panel 213 of the seat assembly 200, thereby providing space for the user to get on and off the swing and allowing the user to sit comfortably on the swing. At this point, the main armrest 220 is locked to the seat body 210 by the locking mechanism, making the main armrest 220 a stable gripping fulcrum, facilitating body transfer, posture adjustment, and center of gravity stability for users with lower limb disabilities when using the swing. The fourth position of the main armrest 220 corresponds to the swing's active posture, and is also locked by the locking mechanism, ensuring stability during swing swings and the pulling of the traction rope 440, preventing the armrest from shifting the direction of force or losing grip due to external force. At this time, the main armrest 220 is positioned to prevent the user from sliding off the seat assembly 200 from the sides, thus providing safety during swing use.

[0062] In this embodiment, the seat assembly 200 also includes a rotational support, which is disposed on the seat body 210 and serves as a rotating mounting base for the main armrest 220. The main armrest 220 forms a stable rotational connection with the seat body 210 through the rotational support. The rotational support can be understood as a bearing seat, bushing, or bearing housing structure disposed on both sides of the seat body 210 or on the back support 212, used to define the rotation axis of the main armrest 220 and provide reliable support, so that the main armrest 220 can maintain smooth rotation and accurate positioning when frequently switching between the third and fourth positions. The fulcrum armrest 240 and the booster 230 are both connected to the main armrest 220, so that the main armrest 220 can transmit motion to the fulcrum armrest 240 and the booster 230 through the connection during rotation. The connection can be a coaxial connection, a linkage hinge connection, or an integrated frame connection to ensure that the three have a definite linkage relationship when switching postures.

[0063] When switching from a fixed state to a usable state to initiate the swing, the user applies external force to the main armrest 220, causing it to rotate from the position corresponding to the fixed state to the position corresponding to the usable state. The rotation of the main armrest 220 proceeds in a predetermined direction under the guidance of the rotational support, and through its connection with the fulcrum armrest 240 and the booster 230, it drives the fulcrum armrest 240 and the booster 230 to rotate synchronously. Since the booster 230 is bonded to the bearing surface via the adhesive 600 in the fixed state, when the booster 230 rotates synchronously with the main armrest 220, it will flip in the direction that separates the adhesive 600 from the bearing surface, causing the adhesive 600 to enter a peeling process and generating significant friction in the early stages of peeling. This generates a forward thrust on the seat assembly 200, providing the initial kinetic energy required for the swing. After the adhesive 600 is completely detached, the booster 230 is lifted off the bearing surface, and the seat assembly 200 enters a normal suspended swing state, facilitating subsequent operations using the traction rope 440 and the counterweight assembly 300 to achieve higher and higher swings. By limiting the rotation trajectory of the main handrail 220 through a rotating support and linking the main handrail 220, the fulcrum handrail 240 and the booster 230 together, this embodiment integrates the handrail positioning, the switching from fixed state to use state required in the swing stage and the separation action of the booster 230 in the swing stage into a single control action. The user only needs to rotate the main handrail 220 to realize the synchronous positioning of multiple components and the triggering of the swing, reducing the operation steps and coordination difficulty, and improving the convenience, controllability and safety of people with lower limb disabilities when using the swing independently.

[0064] like Figure 9 As shown, the seat assembly 200 also includes a footrest 810, which is located at the lower part of the seat body 210 and serves as a support member for the lower limbs. It can be understood as a foot support plate or bracket located below and in front of the seat plate 211, used to support the user's lower legs or feet to maintain lower limb stability. The footrest 810 extends downwards from the lower part of the seat body 210 to a predetermined length and then gradually transitions to a forward extension. This shape provides sufficient vertical support height for the footrest 810, facilitating support and restraint of the lower limbs of users with lower limb disabilities. Simultaneously, the forward extension section forms a foot placement area, preventing the feet from dangling and swinging or rubbing against the front edge of the seat.

[0065] People with lower limb disabilities often have difficulty actively controlling their leg position when using a swing, starting to swing, and swinging higher and higher. Their feet may wobble, droop, or sway to the side due to the inertia of the swing, which not only affects the stability of their sitting posture but may also lead to accidental contact with the ground or the propulsion component 230. The lower extension of the footrest 810 can lift the feet off the ground and maintain a relatively fixed leg posture during the swing, while the forward extension provides a natural support plane for the feet, allowing the lower limbs to swing synchronously with the seat assembly 200 without generating excessive relative movement. This improves the comfort and safety of the swing process without relying on the user's active exertion of force from the lower limbs.

[0066] The footrest 810 can be installed on the support frame at the front end of the bottom bracket 214 or the seat plate 211 by welding, bolting, or plugging. The surface of the footrest 810 can be provided with anti-slip texture, covered with soft padding, or equipped with limiting protrusions to prevent the feet from slipping. The preset length can be selected according to the user's height or the seat height to ensure that the lowest point of the footrest 810 still maintains a safe gap with the ground under the maximum swing amplitude. Through this footrest 810 structure, the risk of body tilting and slipping caused by the lack of support for the lower limbs during swinging can be reduced for people with lower limb disabilities, the ability to maintain posture after getting on the swing can be improved, and the overall safety of independent use can be improved in conjunction with the main handrail 220, the fulcrum handrail 240 and other support structures.

[0067] like Figure 13 As shown, the pulley assembly consists of a first fixed pulley 410 and a force-saving pulley group 430. The traction rope 440 is further divided into a first pull rope 441 and a second pull rope 442 to form a two-stage guiding and force-saving transmission structure. The first fixed pulley 410 is installed on the back of the seat assembly 200, that is, it is a guide pulley located at the end of the back support 212 and above the counterweight box 310. Its main function is to reverse and limit the first pull rope 441, so that the first pull rope 441 is led out from the counterweight 311 and enters the force-saving pulley group 430 along a predetermined path, reducing the risk of the traction rope 440 swinging, rubbing against the seat, or getting entangled in the human body during the swing. One end of the first pull rope 441 is connected to the counterweight 311, and the other end is connected to the input end of the labor-saving pulley block 430. The second pull rope 442 serves as the operating rope end for the user to directly apply force. It works with the labor-saving pulley block 430 to realize the traction transmission of the first pull rope 441, thereby converting the downward pull of the hand into the upward traction of the counterweight 311.

[0068] This embodiment establishes a displacement ratio relationship through a force-saving pulley system 430 to reduce the hand force required for lower limb disabled users to pull the traction rope 440. The force-saving pulley system 430 is constructed such that when the second rope 442 pulls the pulley system 430, the displacement of the end of the first rope 441 is half the displacement of the end of the second rope 442. This is equivalent to a force-saving structure with a mechanical ratio of 2, meaning the second rope 442 needs to pull a longer distance to achieve a shorter displacement of the first rope 441. However, this effectively reduces the pulling force requirement to about half of its original value under ideal conditions, allowing the user to more easily and continuously complete repeated pulling and releasing actions as the swing progresses. Since the lifting and lowering of the counterweight 311 requires overcoming the counterweight's weight and system frictional resistance, this displacement ratio design significantly reduces the instantaneous peak pulling force without changing the counterweight mass configuration, improving the feasibility of continuous operation and making the pulling during the swing process smoother, reducing upper limb fatigue or unstable grip caused by excessive pulling force.

[0069] The labor-saving pulley system 430 can achieve double the labor saving by combining a movable pulley 431 and a fixed pulley. The first pull rope 441 serves as the transmission rope connecting the counterweight 311, and its end is pulled through the movable pulley 431 structure of the pulley system. The second pull rope 442 serves as the hand-pulling end, which is wound around the groove of the labor-saving pulley system 430 and connected to the handle on the side or front of the seat. When the user pulls down the second pull rope 442, it can drive the movable pulley 431 to move, thereby pulling the first pull rope 441 and lifting the counterweight 311. The guide groove of the first fixed pulley 410 limits the first pull rope 441, making the direction of the first pull rope 441 entering the labor-saving pulley system 430 more stable and reducing slippage and wear. By guiding the first fixed pulley 410 and coordinating with the multiplier of the labor-saving pulley group 430, this embodiment lowers the hand operation threshold while maintaining the counterweight lifting function, making it easier for people with lower limb disabilities to continuously lift the counterweight after starting to swing so as to swing higher and higher. At the same time, it is also conducive to more natural rope loosening and reset when it is necessary to stop, thus improving overall safety and ease of use.

[0070] like Figure 13 and Figure 14 As shown, the labor-saving pulley block 430 includes a movable pulley 431 and a second fixed pulley 432. The second fixed pulley 432 is mounted on the main support 100. One end of the second pull rope 442 is connected to the second fixed pulley 432, and the other end extends towards the seat assembly 200 after passing through the guide grooves of the movable pulley 431 and the second fixed pulley 432 in sequence.

[0071] The movable pulley 431 is a pulley component that shifts with force, while the second fixed pulley 432 is a fixedly installed guide pulley component. The second fixed pulley 432 is mounted on the main support 100, for example, below the crossbeam 130, to maintain stability relative to the ground and prevent swaying with the seat assembly 200, thus providing a fixed reversing and guiding reference for the second pull rope 442. The second pull rope 442 serves as the operating rope for the user to apply force directly or indirectly. One end forms a fixed end or fixed connection with the second fixed pulley 432, and the other end passes sequentially around the guide grooves of the movable pulley 431 and the second fixed pulley 432 before extending towards the seat assembly 200, allowing the user to easily pull downwards near the seat. Here, the guide groove refers to the rope groove structure on the pulley rim, used to limit the running trajectory of the pull rope on the pulley, preventing it from jumping out of the groove, slipping, or abnormal wear.

[0072] By fixing the second fixed pulley 432 to the main support 100, the fixed reference point for the force-saving transmission can be positioned in a location that does not move with the swing. This ensures that the winding path of the second pull rope 442 remains relatively stable during the swing's reciprocating motion, reducing the risk of additional rope swing and entanglement caused by the seat's movement. After the second pull rope 442 is wound along the aforementioned path, the movable pulley 431, when subjected to force, shifts along with the structure of the force-saving pulley group 430. This is equivalent to the first pull rope 441 being pulled under the condition that the two strands of the second pull rope 442 share the load, thus creating a mechanical effect that doubles the effort required. This allows the user to lift the counterweight 311 with less hand pulling force. Since the second pull rope 442 ultimately extends towards the seat assembly 200, the user can complete the pulling operation without leaning far out after getting on the swing, and the accessibility of the pull rope remains during the swing, improving the controllability of continuous operation.

[0073] The movable pulley 431 can be connected to the end of the first pull rope 441 or the moving end of the labor-saving pulley group 430 via a pulley frame, so that the displacement of the movable pulley 431 is directly converted into the traction displacement of the first pull rope 441. The second fixed pulley 432 can be fixed to the crossbeam 130 or the support rod by bolts, clamps, or welding. The installation height and offset position can be selected according to the seat swing amplitude and the direction of the pull rope, so that the second pull rope 442 does not interfere with the swing rope, the edge of the seat, or the user's body even at the maximum swing amplitude. The fixed end of the second pull rope 442 can be fixed to the installation part of the second fixed pulley 432 by rope clamps, fixing rings, or end knots. The other end can be equipped with a hand ring, a handle, or connected to the force-sharing structure. Through the above structural constraints, the rope path of the labor-saving pulley group 430 is clearer and the fixing benchmark is more stable, which not only ensures the labor-saving effect but also improves the reliability of the pull rope arrangement, thereby reducing the force burden and entanglement risk for lower limb disabled people when swinging higher and higher, and improving overall safety and ease of use.

[0074] like Figure 13 and Figure 14 As shown, the swing also includes a force-sharing component 700, and the traction rope 440 includes a third pull rope 443 and a fourth pull rope 444. The middle part of the force-sharing component 700 is connected to the end of the second pull rope 442 away from the movable pulley 431, and one end of the third pull rope 443 and the fourth pull rope 444 are respectively connected to the opposite ends of the force-sharing component 700.

[0075] The force-distributing component 700 is a connecting member used to distribute the force of one pull rope to two pull ropes. For example, it may be a transverse connecting rod, distribution ring, or force-distributing plate with a central connection and two end connections. Part of the force-distributing component 700 is connected to the end of the second pull rope 442 away from the movable pulley 431 at its central position. One end of the third pull rope 443 and the fourth pull rope 444 are respectively connected to the opposite ends of the force-distributing component 700, allowing the traction force of the second pull rope 442 to be synchronously transmitted to the third and fourth pull ropes 443 and 444. The third and fourth pull ropes 443 and 444 can be arranged on the left and right sides of the seat assembly 200, respectively, to form a symmetrical two-handed pulling operation with the subsequent handle structure, thus meeting the needs of lower limb disabled persons to maintain body balance during swinging motion.

[0076] The second pull rope 442 serves as the operating rope end of the force-saving pulley system 430. Its tension is distributed at the force-sharing member 700 to the third pull rope 443 and the fourth pull rope 444 on the left and right sides. This allows the user to effectively generate a traction effect on the second pull rope 442 by pulling the third pull rope 443 and the fourth pull rope 444 with both hands, or to achieve a combined force input when gripping the handles on both sides. The structure of the force-sharing member 700, with the second pull rope 442 connected in the middle and the third pull rope 443 and the fourth pull rope 444 connected at both ends, allows the pulling forces from the left and right sides to be combined and transmitted to the force-saving pulley system 430, thereby further driving the first pull rope 441 and the counterweight 311 to achieve lifting and lowering. Compared to pulling a rope on one side with one hand, the force distribution provided by the force distribution component 700 can reduce the burden on one hand and reduce the lateral torque when pulling, making it easier for the user to maintain a symmetrical and stable body posture as they swing higher and higher, reducing the risk of seat tilting, swing trajectory deviation, or interference between the traction rope 440 and other ropes caused by lateral pulling.

[0077] The force-sharing component 700 can be made of metal or high-strength plastic. A connecting hole, hanging ring, or rope groove can be provided in the middle for fixed connection to the end of the second pull rope 442. Connecting holes or hanging points can be provided at both ends for connection to the third pull rope 443 and the fourth pull rope 444, respectively. To achieve more balanced distribution, the distance from both ends of the force-sharing component 700 to the middle can be set to be the same. The third pull rope 443 and the fourth pull rope 444 can be configured with equal lengths to ensure consistent tension during double-sided pulling. Alternatively, the rope lengths can be corrected by adjusting the knot position or by setting a tension adjustment component. Through this force-sharing component 700 structure, this embodiment transforms the single-rope operation of the force-saving pulley system 430 into a double-sided pulling input form. While maintaining the force-saving transmission relationship, it improves the stability and comfort of the pulling operation, making it particularly suitable for scenarios where lower limb disabled individuals need to simultaneously grasp and apply force during swinging, thereby enhancing the safety and continuity of independent use.

[0078] like Figure 1 and Figure 14As shown, the swing ropes include at least a first swing rope 1010 and a second swing rope 1020. The first swing rope 1010 and the second swing rope 1020 are respectively arranged on the left and right sides of the seat assembly 200. One end of each rope is connected to the opposite ends of the seat assembly 200, and the other end is connected to the main support 100, so that the seat assembly 200 forms a stable suspended pendulum under the constraint of the swing ropes on both sides. To facilitate the traction operation for people with lower limb disabilities during the swing, the swing also includes a first pull handle 1030 and a second pull handle 1040. The first pull handle 1030 is sleeved on the first swing rope 1010, and the second pull handle 1040 is sleeved on the second swing rope 1020. The sleeved design means that the handle can slide along the length of the swing rope in the form of a loop, a sliding sleeve, or a sliding ring, but does not detach from the swing rope. The first pull handle 1030 is connected to the third pull rope 443, and the second pull handle 1040 is connected to the fourth pull rope 444, so that the force input of the third pull rope 443 and the fourth pull rope 444 is applied through the left and right handles respectively, forming an operating interface that matches the natural gripping position of the human hands.

[0079] As the swing rises higher, it oscillates back and forth. If the suspended traction rope 440 is pulled directly, it is prone to lateral swinging, which can cause it to entangle, rub against the seat, or deviate from the reachable area. By placing the handle on the swing rope, the rope acts as a guide rail for the handle. The handle remains relatively close to the rope during the swing and swings with it, making it easier for the user to grip the handle and apply force along the rope at different swing phases. At the same time, the third and fourth pull ropes 443 and 444 are arranged near the handle and the swing rope, allowing the input path of the traction rope 440 to be closer to the movement trajectory of the rope, reducing the lateral swing of the traction rope 440 relative to the seat assembly 200. This reduces the mutual interference between the third and fourth pull ropes 443 and the swing rope, improving the controllability and continuity of the pulling process. Handles are provided on the left and right sides respectively and are connected to the third pull rope 443 and the fourth pull rope 444. This allows the user to apply force symmetrically with both hands, reducing body tilt and swing trajectory deviation caused by pulling on one side, and enhancing posture stability during the higher the swing.

[0080] The first pull handle 1030 and the second pull handle 1040 can adopt a sliding sleeve structure made of wear-resistant material. The inner hole size matches the outer diameter of the swing rope to achieve a sliding effect that is not easy to jam. The connection between the handle and the third pull rope 443 and the fourth pull rope 444 can be achieved through rope loops, connecting buckles, or swivel joints, so as to allow the connection point to automatically adjust its direction and reduce the probability of rope kinking when the handle slides on the swing rope. The first swing rope 1010 and the second swing rope 1020 can be fiber rope, steel wire rope, or chain. Through the above structural settings, this embodiment provides a more grippy, less entangled, and more symmetrical and stable pulling interface for people with lower limb disabilities without changing the basic suspension form of the swing. This allows the traction input to be continuously and effectively transmitted to the force-saving pulley group 430 and the counterweight component 300 during the swing, thereby improving the safety and ease of operation when used independently.

[0081] The first pull handle 1030 and the second pull handle 1040 are respectively fitted onto the first swing rope 1010 and the second swing rope 1020 in a sleeve manner. The handle has the freedom to slide along the rope direction relative to the swing rope but does not detach from the swing rope. Thus, during the swing's reciprocating swing, the handle is always geometrically constrained by the swing rope and maintains a motion trajectory close to the swing rope. Since the seat assembly 200 swings back and forth with the swing rope as a whole, placing the glove on the swing rope will not change the force path and suspension length of the swing rope. When the user pulls the handle during the swing, the handle mainly exhibits a state of relative sliding along the length direction of the swing rope. It is equivalent to the handle moving with the swing rope as a guide rail, rather than applying additional lateral pull or torsion to the swing rope body. Therefore, it is not easy to cause additional lateral load, accelerated wear, or swing trajectory disturbance to the first swing rope 1010 and the second swing rope 1020, ensuring the stability and life of the suspension system.

[0082] Simultaneously, the first pull handle 1030 is connected to the third pull rope 443, and the second pull handle 1040 is connected to the fourth pull rope 444, so that the spatial arrangement of the third pull rope 443 and the fourth pull rope 444 changes with the position of the handle. Since the handle is always fitted and close to the swing rope, the third pull rope 443 and the fourth pull rope 444 will also be guided to the area close to the swing rope and move back and forth along the direction of the swing rope during the pulling process, so that the traction input path and the swing trajectory of the swing rope tend to be consistent. In this way, the traction rope 440 and its component force structure do not need to form a large-amplitude free swing in the air, which can reduce the cross-entanglement and mutual whipping between the third pull rope 443, the fourth pull rope 444 and the swing rope, reduce the probability of the component force 700 deflection and collision during the swing, and avoid the pulling obstruction or sudden force change caused by the mutual interference of the ropes. By coordinating the placement of the gloves with the rope path, this embodiment enables people with lower limb disabilities to continue and smoothly perform bilateral pulling operations while the swing is swinging back and forth, improving the continuity of control and safety as the swing goes higher.

[0083] In this embodiment, the first swing rope 1010 splits into two strands at the end furthest from the main support 100. The two strands are separated in space at a preset angle and connected to the seat assembly 200 at different positions along the length. Similarly, the second swing rope 1020 splits into two strands at the end furthest from the main support 100 and is connected to the seat assembly 200 at different positions after being separated at a preset angle. The splitting into two strands can be understood as setting a forked connection structure at the lower end of the swing rope, such as using a forked rope, forked chain, or Y-shaped connecting belt, so that a single swing rope forms two connecting branches near the seat assembly 200. The two strands being connected to the seat assembly 200 at different positions along the length can correspond to two front and rear connection points on both sides of the seat assembly 200 or two connection points at a certain vertical interval, thereby forming two distributed suspension points on each side.

[0084] Traditional two-point suspension is prone to swaying of the seat around the sway ropes when subjected to lateral forces or changes in body posture. This is especially true for people with lower limb disabilities, as pulling the traction rope 440 with the upper limbs or shifting the body's center of gravity can introduce asymmetrical loads, causing the seat to rotate or tilt. By branching each sway rope at its lower end to form two connection points, the two strands of the first sway rope 1010 and the two strands of the second sway rope 1020 respectively form four connection points with the seat assembly 200. These four connection points geometrically form an approximately rectangular support boundary, increasing the suspension constraint of the seat assembly 200 from two points to a four-point distributed constraint. This strengthens the constraint on the torsional degree of freedom of the seat during swaying, suppresses spontaneous rotation of the seat around the vertical axis, and reduces the tilt amplitude, thus making the seat posture more stable and easier to control.

[0085] The included angle and connection position of the two strands can be set according to the seat width, the height of the back panel 213, or the connection hole position of the bottom bracket 214. To avoid local stress concentration, the connection between the two strands and the seat assembly 200 can adopt a bushed connection hole, a hanging ring, or a hinged ear plate structure. Through this bifurcated four-point connection method, the seat assembly 200 can maintain a more stable posture during swinging, starting to swing, and swinging higher and higher, reducing the risk of twisting and lateral slippage during the swinging process. In conjunction with the pull handles on both sides, the force distribution component 700, and other structures, it can improve the safety and comfort of independent use by people with lower limb disabilities.

[0086] During the swinging process, according to the law of conservation of energy, let the swing's mass be Ms, the human body's mass be Mb, the counterweight's mass be m, the height the system rises in a single swing be ΔH, the counterweight's height rise be Δh, the mechanical efficiency be η, and the acceleration due to gravity be g. We can obtain the equation: mg × Δhη = (Ms + Mb + m)g ΔH. Furthermore, the expression for the counterweight's mass m is: m = ΔH(Ms + Mb) / Δhη - ΔH. In addition, considering the user's physical strength, it's impossible to directly pull the counterweight multiple times. Therefore, we consider using a force-saving pulley with a pulley ratio k = 2. From this, we can derive the expressions for the distance Sh that the hands pull the ropes from and the pulling force Fh from the hands: Sh = mgΔh / Fh.

[0087] Since swing users have varying weights, this design incorporates multiple reference weight classes. The swing mass is Ms, the single swing system height ΔH, the counterweight height Δh, and the mechanical efficiency η is a constant. The calculation results are as follows: Figure 15 As shown. With this data setting, the swing can rise steadily by 1cm-1.5cm with each swing, and the single-handed pulling force for a weight of less than 50kg is equivalent to the force required to pick up a bottle of mineral water.

[0088] The dimensions of the counterweight box 310 match the dimensions of the counterweight. The counterweight is made of cast iron. The calculated volume data for the counterweight block can be found here. Figure 16 As shown. The counterweight can be cylindrical, with its radius and height as shown. Figure 16 As shown, The above description is merely a specific embodiment of the present invention. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. A swing designed for use by people with lower limb disabilities, characterized in that, include: Main support; The seat assembly is suspended from the bracket by a swing rope; The counterweight assembly includes a counterweight component and a counterweight box, the counterweight box being mounted on the seat assembly and the counterweight component being located within the counterweight box; The traction rope is connected at one end to the counterweight. A pulley assembly is provided, wherein the end of the traction rope away from the counterweight passes through the pulley assembly, and the pulley assembly is configured such that when the end of the traction rope away from the counterweight is pulled downward, the counterweight is pulled upward; and when the upward pulling force on the counterweight on the traction rope is less than the component of the counterweight's weight in the direction of the rope, the counterweight falls back.

2. The swing as described in claim 1, which is convenient for use by people with lower limb disabilities, is characterized in that, The counterweight box is installed on the back of the seat assembly, which includes a seat body and a booster, and the booster is rotatably connected to the seat body. When the swing is in a fixed state, the bottom of the booster is bonded and fixed to the surface of the object supporting the swing by an adhesive component; When the booster rotates from its fixed position under the action of an external force in the direction that causes the adhesive to separate from the surface of the object being bonded, the initial momentum of the seat assembly is given by the reaction force generated by the resistance when the adhesive separates.

3. The swing according to claim 2, which is convenient for use by people with lower limb disabilities, is characterized in that, The seat assembly also includes a fulcrum armrest, which is rotatably connected to the seat body; When the swing is in a fixed state, the fulcrum armrest is in the first position and is locked to the seat body by the locking mechanism; When the swing is in use, the fulcrum armrest is in the second position and locked to the seat body by the locking mechanism.

4. The swing according to claim 3, which is convenient for use by people with lower limb disabilities, is characterized in that, The seat assembly also includes a main armrest, which is rotatably connected to the seat body; When the swing is in a fixed state, the main armrest is in the third position and locked to the seat body by the locking mechanism; When the swing is in use, the main armrest is in the fourth position and locked to the seat body by a locking mechanism.

5. The swing according to claim 4, which is convenient for use by people with lower limb disabilities, is characterized in that, The seat assembly also includes a swivel support, which is disposed on the seat body. The main armrest is rotatably connected to the seat body via the swivel support. The fulcrum armrest and the pusher are both connected to the main armrest.

6. The swing according to claim 1, which is convenient for use by people with lower limb disabilities, is characterized in that, The seat assembly also includes a footrest, which extends downward from the lower part of the seat body to a preset length and then gradually transitions to extending forward.

7. The swing according to any one of claims 1 to 6, which is convenient for use by people with lower limb disabilities, is characterized in that, The pulley assembly includes a first fixed pulley and a force-saving pulley group. The traction rope includes a first pull rope and a second pull rope. The first fixed pulley is installed on the back of the seat assembly. One end of the first pull rope is connected to the counterweight, and the other end is connected to the input end of the force-saving pulley group. The force-saving pulley group is configured such that when the second pull rope pulls the force-saving pulley group, the displacement of the end of the first pull rope is half of the displacement of the end of the second pull rope.

8. The swing according to claim 7, which is convenient for use by people with lower limb disabilities, is characterized in that, The labor-saving pulley system includes a movable pulley and a second fixed pulley. The second fixed pulley is mounted on the main support. One end of the second pull rope is connected to the second fixed pulley, and the other end passes through the guide grooves of the movable pulley and the second fixed pulley in sequence and extends towards the seat assembly.

9. The swing according to claim 8, which is convenient for use by people with lower limb disabilities, is characterized in that, The swing also includes a force-sharing component, and the traction rope includes a third pull rope and a fourth pull rope. The middle part of the force-sharing component is connected to the end of the second pull rope away from the movable pulley, and one end of the third pull rope and the fourth pull rope are respectively connected to the opposite ends of the force-sharing component.

10. The swing for use by persons with lower limb disabilities according to any one of claims 8, characterized in that, The swing ropes include at least a first swing rope and a second swing rope. One end of the first swing rope and the second swing rope are respectively connected to opposite ends of the seat assembly, and the other end of the first swing rope and the second swing rope are connected to the main support. The swing also includes a first pull handle and a second pull handle. The first pull handle is attached to the first swing rope, and the second pull handle is attached to the second swing rope. The first pull handle is connected to the third pull rope, and the second pull handle is connected to the fourth pull rope.

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