Adjustable leg rest for a wheelchair

Abstract

The utility model discloses an adjustable leg support of wheelchair, including wheelchair body and two L type leg rods, two L type leg rods lateral wall all are connected with the leg support board of rotation, two leg support boards all are provided with support rod, two support rods one side all are provided with the binding mechanism, wherein, the leg support board tail portion is equipped with the U type tail plate, the support rod is connected in the corresponding leg support board in -side rotation, is equipped with the through slot on the support rod, the through slot inner wall sliding connection has the movable rod, the binding mechanism sets up in the corresponding movable rod one side, the binding mechanism includes fixed band and movable band, fixed band and movable band are connected fixed through magic tape, through the connecting mode of fixed band and movable band with the help of magic tape, the user leg is bound in support rod and movable rod one side, makes the leg in the wheelchair movement, jolt, or the user body swing, because the restraint of fixed band, movable band and the location of U type tail plate, is not easy from the leg support board slide.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair leg support technology, specifically an adjustable wheelchair leg support. Background Technology

[0002] Adjustable leg supports, as key components supporting the user's legs, are installed in front of the wheelchair seat. Their core function is to effectively distribute the weight of the legs and maintain a comfortable lower limb posture, thereby avoiding the risks of poor blood circulation, muscle fatigue, and pressure sores caused by unsupported legs or improper posture. They play an important role in the daily use of people with limited lower limb mobility, such as people with disabilities, the elderly, or those recovering from surgery. However, existing traditional adjustable leg supports have significant shortcomings in practical applications: traditional leg support designs focus on length and angle adjustments but generally lack effective restraint mechanisms for the user's legs. For users with hemiplegia or those who cannot control their legs independently, because their legs cannot actively maintain a stable posture on the leg support, they are very likely to slip off the leg support during wheelchair movement, bumps, or body swaying. This not only affects the support effect of the leg support but may also cause secondary injuries such as abrasions and bumps due to collisions or dragging of the legs with the ground or wheelchair parts, seriously threatening the user's safety and user experience. This fails to meet the core needs of people with lower limb dysfunction for leg support stability and safety.

[0003] Therefore, this utility model provides an adjustable leg rest for wheelchairs. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides an adjustable leg rest for wheelchairs to solve the above problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable leg rest for a wheelchair, comprising a wheelchair body and two L-shaped leg posts. Each of the two L-shaped leg posts has a leg support plate rotatably connected to its side wall. Each of the two leg support plates is provided with a support rod, and each of the two support rods has a binding mechanism on one side. A U-shaped tail plate is installed at the rear of each leg support plate. The support rod is rotatably connected to the inner side of the corresponding leg support plate. A through groove is formed on the support rod, and a movable rod is slidably connected to the inner wall of the through groove. The binding mechanism is located on the side corresponding to the movable rod, and includes a fixing strap and a movable strap, which are connected and fixed by Velcro.

[0006] Preferably, each of the two L-shaped leg rods has a clearance notch on one side, and the support rod is engaged with the inner wall of the corresponding clearance notch.

[0007] Preferably, a threaded inner tube is installed on the inner wall of the through groove, the threaded inner tube is inserted into the inner wall of the movable rod, and a threaded rod is rotatably connected to the inner wall of the movable rod, the threaded rod being threadedly connected to the inner wall of the threaded inner tube.

[0008] Preferably, a knob is installed at the top of the threaded rod, a limit ring is rotatably connected to the side wall of the threaded rod, the limit ring is rotatably connected to the inner wall of the movable rod, a limit plate is installed at the bottom of the support rod, and the limit plate contacts the bottom end of the U-shaped tail plate.

[0009] Preferably, a scale line is provided on one side of the movable rod, and the scale line corresponds to the position of the support rod.

[0010] Preferably, an arc-shaped support plate is installed on one side of the fixing belt, and the arc-shaped support plate is installed on the side wall of the movable rod.

[0011] Beneficial effects

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] This utility model uses a fastening method to connect the user's legs to the support rod and the movable rod on one side via Velcro. This prevents the legs from slipping off the leg rest when the wheelchair moves, bumps, or the user's body sways, due to the restraint of the fastening and movable straps and the limitation of the U-shaped tailboard. The support rod continuously provides stable support to the binding mechanism and the legs, further enhancing the fixation effect. The binding mechanism, together with the U-shaped tailboard, structurally restrains the legs in the front, back, and sides. It is specifically designed for people with hemiplegia or other conditions where the legs cannot be controlled independently, preventing the legs from colliding with or being dragged by the ground or wheelchair parts due to accidental slippage, thus reducing the risk of secondary injury. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention in its folded state;

[0015] Figure 2 This is a three-dimensional structural diagram of the present invention in its unfolded state;

[0016] Figure 3 This is the utility model Figure 2 A magnified view of the structure at point A in the middle;

[0017] Figure 4 This is a three-dimensional enlarged structural schematic diagram of the support rod in this utility model;

[0018] Figure 5 This is a cross-sectional structural diagram of the support rod in this utility model.

[0019] In the diagram: 1. Wheelchair body; 11. L-shaped leg bar; 12. Clearance notch; 2. Leg rest; 21. U-shaped tailboard; 3. Support rod; 31. Through groove; 32. Movable rod; 321. Scale line; 33. Threaded inner tube; 34. Threaded rod; 341. Knob; 342. Limiting ring; 35. Limiting plate; 4. Binding mechanism; 41. Fixing strap; 42. Movable strap; 43. Arc-shaped support plate. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4 An adjustable leg rest for a wheelchair includes a wheelchair body 1 and two L-shaped leg bars 11. Each of the two L-shaped leg bars 11 has a leg support plate 2 rotatably connected to its side wall. Each of the two leg support plates 2 is provided with a support rod 3, and each of the two support rods 3 has a binding mechanism 4 on one side.

[0022] Among them, a U-shaped tail plate 21 is installed at the tail of the leg support plate 2, the support rod 3 is rotatably connected to the inner side of the corresponding leg support plate 2, the support rod 3 is provided with a through groove 31, the inner wall of the through groove 31 is slidably connected to a movable rod 32, and the binding mechanism 4 is set on one side of the corresponding movable rod 32.

[0023] It should be noted that the support rod 3 described in this embodiment supports the binding mechanism 4 through the movable rod 32.

[0024] The binding mechanism 4 includes a fixed strap 41 and a movable strap 42, which are connected and fixed by Velcro.

[0025] It should be noted that the binding mechanism 4 described in this embodiment binds the user's legs with a fixed strap 41 and a movable strap 42, thereby restricting the legs to above the leg support plate 2.

[0026] Specifically, the user places their legs on the leg rest 2 and can first adjust it to a suitable angle by rotating the leg rest 2 to meet the user's comfort posture requirements. The U-shaped tail plate 21 at the rear of the leg rest 2 provides initial restraint on the back of the leg. At the same time, the support rod 3 is rotatably connected to the inside of the U-shaped tail plate 21. The movable rod 32 in its through groove 31 can be slidably adjusted to change the effective support length of the support rod 3 to adapt to different leg sizes. The support rod 3 is located behind the user's legs. Using the binding mechanism 4, the user's legs are bound to the support rod by the connection between the fixing strap 41 and the movable strap 42 using Velcro. The support rod 3 and the movable rod 32 on one side prevent the legs from slipping off the leg rest 2 when the wheelchair moves, bumps, or the user's body sways, due to the restraint of the fixing strap 41, the movable strap 42, and the limitation of the U-shaped tail plate 21. The support rod 3 continuously provides stable support to the binding mechanism 4 and the legs, further enhancing the fixation effect. The binding mechanism 4 and the U-shaped tail plate 21 work together to structurally restrain the legs in the front, back, and sides, which is specially adapted to people with hemiplegia and other conditions where the legs cannot be controlled independently, preventing the legs from colliding or being dragged by the ground or wheelchair parts due to accidental slippage, reducing the risk of secondary injury.

[0027] In one embodiment of this utility model, such as Figures 1-4 As shown, each of the two L-shaped leg rods 11 has a clearance notch 12 on one side, and the support rod 3 is engaged with the inner wall of the corresponding clearance notch 12.

[0028] Specifically, when the leg rest needs to be stored or adjusted, the support rod 3 can rotate around the rotating connection point inside the U-shaped tail plate 21, so that it can be engaged with the inner wall of the clearance notch 12 of the corresponding L-shaped leg rod 11. Through the structural adaptation of the clearance notch 12, the support rod 3 is limited and fixed, so that the leg rest can be stored in an orderly manner when not in use, making the leg rest more regular and stable during adjustment and storage, and improving the convenience of use and the compactness of the structure.

[0029] In one embodiment of this utility model, such as Figures 1-4 As shown, a threaded inner tube 33 is installed on the inner wall of the through groove 31. The threaded inner tube 33 is inserted into the inner wall of the movable rod 32. A threaded rod 34 is rotatably connected to the inner wall of the movable rod 32. The threaded rod 34 is threadedly connected to the inner wall of the threaded inner tube 33.

[0030] It should be noted that the threaded inner tube 33 described in this embodiment is used to adjust the position of the movable rod 32 in the support rod 3.

[0031] Specifically, when the threaded rod 34 is rotated, the threaded rod 34 moves axially relative to the threaded inner tube 33 by utilizing the helical transmission characteristics of the thread, which drives the movable rod 32 to slide along the inner wall of the through groove 31. This allows for precise adjustment of the extension or retraction position of the movable rod 32 in the support rod 3, thereby adjusting the support height and position of the support rod 3 on the binding mechanism 4. This adapts to different users' leg sizes and binding needs. The threaded transmission enables the stability and adjustability of the position of the movable rod 32, enhancing the adaptability of the leg support for leg support and limitation.

[0032] In one embodiment of this utility model, such as Figures 1-4 As shown, a knob 341 is installed at the top of the threaded rod 34, a limit ring 342 is rotatably connected to the side wall of the threaded rod 34, the limit ring 342 is rotatably connected to the inner wall of the movable rod 32, and a limit plate 35 is installed at the bottom of the support rod 3, the limit plate 35 is in contact with the bottom end of the U-shaped tail plate 21.

[0033] It should be noted that the limiting ring 342 described in this embodiment restricts the threaded rod 34 to a fixed position in the movable rod 32.

[0034] Specifically, by rotating the threaded rod 34 with the knob 341, the threaded engagement between the threaded rod 34 and the threaded inner tube 33 drives the movable rod 32 to slide along the through groove 31, thereby adjusting the position of the movable rod 32. The limiting ring 342 is rotatably connected to the inner wall of the movable rod 32, restricting the axial displacement of the threaded rod 34 and ensuring that it can only rotate, thus stably transmitting the adjustment force. The limiting plate 35 is installed at the bottom of the support rod 3 and contacts the bottom end of the U-shaped tail plate 21, limiting the rotation range of the support rod 3 and the downward stroke of the movable rod 32, preventing over-adjustment from causing structural misalignment, ensuring the stability of the leg support and limiting functions, and enabling all components to work together to achieve precise positioning of the movable rod 32 and reliable operation of the overall leg support structure.

[0035] In one embodiment of this utility model, such as Figures 1-4 As shown, a scale line 321 is provided on one side of the movable rod 32, and the scale line 321 corresponds to the position of the support rod 3.

[0036] Specifically,.

[0037] In one embodiment of this utility model, such as Figures 1-4 As shown, an arc-shaped support plate 43 is installed on one side of the fixed belt 41, and the arc-shaped support plate 43 is installed on the side wall of the movable rod 32.

[0038] It should be noted that the arc-shaped support plate 43 described in this embodiment supports the tail of the fixing belt 41, and both the fixing belt 41 and the movable belt 42 are provided with breathable sponge.

[0039] Specifically, when the sliding position of the movable rod 32 in the through groove 31 of the support rod 3 is adjusted by the threaded rod 34, the user can intuitively judge the extension length of the movable rod 32 by observing the corresponding scale line 321 and the edge of the support rod 3, so as to achieve precise synchronization of the adjustment length of the movable rod 32 on both sides of the leg support; an arc-shaped support plate 43 is installed on one side of the fixing strap 41 and fixed to the side wall of the movable rod 32. The arc-shaped support plate 43 forms a structural support for the tail of the fixing strap 41, which enhances the load-bearing stability of the fixing strap 41 when binding the legs and avoids the fixing strap 41 from loosening due to deformation under force. At the same time, the breathable sponge set inside the fixing strap 41 and the movable strap 42 improves the contact comfort while realizing the leg restraint, reduces the stuffiness or pressure marks caused by long-term binding, and takes into account the support stability and the use comfort, so as to ensure the reliable performance of the leg restraint function of the binding mechanism 4.

[0040] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0041] Working principle: The user places their legs on the leg rest 2 and adjusts the angle by rotating the leg rest 2. The U-shaped tail plate 21 initially limits the rear of the legs. The support rod 3 is rotatably connected to the inside of the leg rest 2. Rotating the knob 341 drives the threaded rod 34 to engage with the threaded inner tube 33, driving the movable rod 32 to slide along the through groove 31. The scale line 321 corresponds to the support rod 3 to ensure synchronous adjustment on both sides. The fixing strap 41 and the movable strap 42 of the binding mechanism 4 are bound to the legs with Velcro. The arc-shaped support plate 43 supports the tail of the fixing strap 41 to prevent deformation, and the internal breathable sponge enhances comfort. The limiting ring 342 restricts the axial displacement of the threaded rod 34, and the limiting plate 35 contacts the U-shaped tail plate 21 to prevent over-adjustment. When stored, the support rod 3 is locked into the clearance notch 12 of the L-shaped leg rod 11. The whole system achieves stable leg restraint and comfortable support through adjustable support, binding restraint, and structural protection, preventing the legs from slipping when the wheelchair moves, and adapting to different leg size requirements.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable leg rest for a wheelchair, comprising a wheelchair body (1) and two L-shaped leg posts (11), characterized in that, Both L-shaped leg rods (11) are rotatably connected to leg support plates (2) on their side walls. Each leg support plate (2) is equipped with a support rod (3), and each support rod (3) has a binding mechanism (4) on one side. The leg support plate (2) is equipped with a U-shaped tail plate (21) at its tail end. The support rod (3) is rotatably connected to the inner side of the leg support plate (2). A through groove (31) is provided on the support rod (3). A movable rod (32) is slidably connected to the inner wall of the through groove (31). The binding mechanism (4) is located on one side of the movable rod (32). The binding mechanism (4) includes a fixed strap (41) and a movable strap (42), which are connected and fixed by Velcro.

2. The adjustable leg rest for a wheelchair according to claim 1, characterized in that, Both of the two L-shaped leg rods (11) have a clearance notch (12) on their opposite sides, and the support rod (3) is engaged with the inner wall of the corresponding clearance notch (12).

3. The adjustable leg rest for a wheelchair according to claim 1, characterized in that, The inner wall of the through groove (31) is fitted with a threaded inner tube (33), which is inserted into the inner wall of the movable rod (32). The inner wall of the movable rod (32) is rotatably connected to a threaded rod (34), which is threadedly connected to the inner wall of the threaded inner tube (33).

4. The adjustable leg rest for a wheelchair according to claim 3, characterized in that, A knob (341) is installed at the top of the threaded rod (34), a limiting ring (342) is rotatably connected to the side wall of the threaded rod (34), the limiting ring (342) is rotatably connected to the inner wall of the movable rod (32), and a limiting plate (35) is installed at the bottom of the support rod (3), the limiting plate (35) is in contact with the bottom end of the U-shaped tail plate (21).

5. The adjustable leg rest for a wheelchair according to claim 1, characterized in that, A scale line (321) is provided on one side of the movable rod (32), and the scale line (321) corresponds to the position of the support rod (3).

6. The adjustable leg rest for a wheelchair according to claim 1, characterized in that, An arc-shaped support plate (43) is installed on one side of the fixing belt (41), and the arc-shaped support plate (43) is installed on the side wall of the movable rod (32).

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