Multifunctional wheelchair with adjustable lower limb lifting angle

Abstract

This utility model discloses a multifunctional wheelchair with adjustable lower limb elevation angle, including a wheelchair body. Its features include: an adjustable leg support mechanism, a storage rack mechanism, and a height-adjustable seat mechanism. The wheelchair body has a height-adjustable seat mechanism, and the front end of the wheelchair body has symmetrically arranged adjustable leg support mechanisms. A storage rack mechanism is located on one side of the wheelchair body. The adjustable leg support mechanism includes a leg support rod, a foot pedal, an arc-shaped adjustment plate, and a fixing block. The fixing block is located on the front support leg of the wheelchair body. The upper end of the leg support rod is rotatably connected to the fixing block via a pin. The lower end of the leg support rod has a foot pedal. An arc-shaped adjustment plate is located at the end of the leg support rod near the fixing block, and the arc-shaped adjustment plate has multiple first adjustment holes. An internally threaded tube is located on one side of the front support leg of the wheelchair body, and a fixing bolt is located inside the internally threaded tube. The fixing bolt cooperates with the first adjustment holes to position the leg support rod.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair technology, specifically to a multifunctional wheelchair with adjustable lower limb elevation angle. Background Technology

[0002] Currently, wheelchairs are widely used in daily life as an important mobility aid for people with mobility impairments (such as the elderly, those with lower limb injuries or illnesses). However, existing wheelchairs generally have some shortcomings. On the one hand, the leg rest angles are mostly fixed, making it difficult to adjust them according to the user's specific needs. For people who require special care for their lower limbs, such as patients who need to elevate their lower limbs to promote blood circulation and relieve swelling or pain, fixed-angle leg rests cannot provide personalized support, affecting the effectiveness and comfort of use.

[0003] On the other hand, the seat height is usually fixed. Users of different heights and body types may find the seat too high or too low, making it inconvenient to get in and out of the wheelchair and causing fatigue after prolonged use.

[0004] In addition, the existing storage space for wheelchairs is relatively limited, making it difficult for users to properly store their belongings, which causes inconvenience to daily travel.

[0005] Therefore, there is an urgent need for a multifunctional wheelchair with adjustable lower limb elevation angle to address the technical problems described above. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the defects of the above-mentioned technology and provide a multifunctional wheelchair with adjustable lower limb elevation angle.

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is a multifunctional wheelchair with adjustable lower limb elevation angle: including a wheelchair body, characterized in that:

[0008] It also includes an adjustable leg support mechanism, a storage rack mechanism, and a height-adjustable seat plate mechanism. The wheelchair body is provided with a height-adjustable seat plate mechanism, the front end of the wheelchair body is symmetrically provided with adjustable leg support mechanisms, and one side of the wheelchair body is provided with a storage rack mechanism.

[0009] The adjustable leg support mechanism includes a leg support rod, a foot pedal, an arc-shaped adjustment plate, and a fixing block. The fixing block is mounted on the front support leg of the wheelchair body. The upper end of the leg support rod is rotatably connected to the fixing block via a pin. The lower end of the leg support rod is provided with a foot pedal. An arc-shaped adjustment plate is provided at one end of the leg support rod near the fixing block. The arc-shaped adjustment plate is provided with multiple first adjustment holes. An internally threaded tube is provided on one side of the front support leg of the wheelchair body. A fixing bolt is provided inside the internally threaded tube. The fixing bolt cooperates with the first adjustment holes to position the leg support rod.

[0010] As an improvement, the first adjustment hole on the arc-shaped adjustment plate is provided with six holes, which are respectively angled with the leg support rod at 30 degrees, 60 degrees, 90 degrees, 120 degrees, 135 degrees and 150 degrees.

[0011] As an improvement, the fixing bolt is provided with a handle at its end.

[0012] As an improvement, the shelf mechanism includes an L-shaped support rod, a tray, a baffle, and a lower connecting part. The L-shaped support rod is mounted on the front outrigger of the wheelchair body. The lower connecting part is rotatably provided at one end of the L-shaped support rod. A retaining plate is symmetrically provided at one end of the L-shaped support rod. A retaining groove is symmetrically provided at the end of the lower connecting part near the retaining plate. The retaining groove and the retaining plate cooperate. Support columns are provided at the four corners of the upper part of the tray. Baffles are provided around the upper part of the tray, with each baffle located between two adjacent support columns. One side of the baffle is rotatably connected to a support column via a shaft. A first... The first circular hole has one end that passes through an adjacent support column. The baffle has a second circular hole that communicates with the first circular hole. The diameter of the second circular hole is larger than that of the first circular hole. The end of the second circular hole away from the first circular hole has a cross-shaped slot. The first circular hole has a pin. One end of the pin extends into the second circular hole. The end of the pin that extends into the second circular hole has a cross-shaped insert plate. The cross-shaped insert plate and the cross-shaped slot cooperate. The other end of the pin has a symmetrical limiting plate. The support column has a symmetrical limiting groove near the limiting plate. The limiting plate and the limiting groove cooperate.

[0013] As an improvement, the tray is provided with a cup holder.

[0014] As an improvement, the adjustable seat mechanism includes a seat plate, a support cylinder, and an adjusting rod. The support cylinder is symmetrically arranged on both sides of the wheelchair body. The support cylinder is provided with a fixing hole and a positioning pin is provided in the fixing hole. The adjusting rod is provided inside the support cylinder and can move up and down inside the support cylinder. The adjusting rod is evenly provided with a plurality of second adjusting holes. The positioning pin and the second adjusting holes cooperate with each other. The lower end of the seat plate is connected to the upper ends of the two adjusting rods.

[0015] The advantages of this utility model compared with the prior art are as follows:

[0016] 1. The adjustable leg support mechanism achieves flexible adjustment of the leg support angle through components such as the leg support rod, foot pedal, arc-shaped adjustment plate, and fixing block. The arc-shaped adjustment plate has six first adjustment holes with different angles (30 degrees, 60 degrees, 90 degrees, 120 degrees, 135 degrees, and 150 degrees). Users can adjust the leg support rod to a suitable angle according to their own lower limb care needs and comfort by engaging the fixing bolt with different first adjustment holes. For example, when users need to slightly elevate their lower limbs to promote blood circulation, they can choose 30 degrees or 60 degrees; when they need their legs to be in a vertical position for rest, they can adjust it to 90 degrees; for situations requiring a larger angle of leg elevation to relieve swelling, they can choose angles such as 120 degrees, 135 degrees, or 150 degrees. This adjustable design can meet the needs of different users in different scenarios, effectively improving lower limb blood circulation, reducing lower limb pressure, and enhancing user comfort and care effect. In addition, the handle at the end of the fixing bolt allows for easy manual operation by the user, eliminating the need for tools and making the adjustment process simple and quick.

[0017] 2. The shelving mechanism includes an L-shaped support rod, a tray, baffles, and a lower connecting part, providing ample storage space for users. The L-shaped support rod is mounted on the front support leg of the wheelchair, with one end rotatably connected to the lower connecting part via a locking plate and slot. This design allows the tray to rotate as needed, facilitating the placement and retrieval of items. Baffles around the top of the tray prevent items from slipping, improving safety. The baffles are rotatably connected to the support rod via an axle and secured with pins, cross-shaped inserts, and cross-shaped slots. Users can flexibly adjust the angle and position of the baffles according to the height and shape of the items to accommodate different needs. Additionally, the cup holder on the tray is specifically designed to secure cylindrical items such as cups, preventing them from tipping over and further enhancing the practicality of the shelving.

[0018] 3. The height-adjustable seat mechanism achieves adjustable seat height through the cooperation of components such as support cylinders, adjusting rods, and positioning pins. Symmetrically arranged support cylinders on both sides of the wheelchair body contain adjustable rods that can move up and down. Evenly distributed second adjustment holes on the adjusting rods engage with fixing holes on the support cylinders via positioning pins, thus fixing the adjusting rods at different height positions and achieving seat height adjustment. This design can accommodate users of different heights and body types, ensuring that the user's feet can be stably placed on the ground when using the wheelchair, improving stability and comfort. At the same time, the adjustable seat height also facilitates users getting in and out of the wheelchair, reducing inconvenience and safety hazards caused by unsuitable seat height. Attached Figure Description

[0019] Figure 1This is a front view of a multifunctional wheelchair with adjustable lower limb elevation angle according to this utility model.

[0020] Figure 2 This is a side view of a multifunctional wheelchair with adjustable lower limb elevation angle according to the present invention.

[0021] Figure 3 This is a top-view three-dimensional structural diagram of a multifunctional wheelchair with adjustable lower limb elevation angle according to the present invention.

[0022] Figure 4 This is a three-dimensional structural diagram of a multifunctional wheelchair with adjustable lower limb elevation angle, as shown in the upward view.

[0023] Figure 5 yes Figure 2 Sectional view at point AA.

[0024] Figure 6 yes Figure 1 Sectional view at point BB.

[0025] Figure 7 yes Figure 3 A magnified view of a section at point C.

[0026] Figure 8 yes Figure 4 A magnified view of a section at point D.

[0027] Figure 9 yes Figure 3 A magnified view of a section at point E in the middle.

[0028] Figure 10 yes Figure 5 A magnified view of a section at point F.

[0029] Figure 11 yes Figure 6 A magnified view of a section at point G.

[0030] As shown in the figure:

[0031] 1. Wheelchair body; 2. Leg support rod; 3. Foot pedal; 4. Arc-shaped adjustment plate; 5. Fixing block; 6. First adjustment hole; 7. Internal threaded tube; 8. Fixing bolt; 9. Handle; 10. L-shaped support rod; 11. Support plate; 12. Baffle; 13. Lower connecting part; 14. Clamping plate; 15. Clamping slot; 16. Support column; 17. First round hole; 18. Second round hole; 19. Cross-shaped slot; 20. Pin; 21. Limiting plate; 22. Limiting groove; 23. Cup holder; 24. Seat plate; 25. Support cylinder; 26. Adjusting support rod; 27. Fixing hole; 28. Positioning pin; 29. ​​Second adjustment hole; 30. Cross-shaped insert plate. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Combined with appendix Figure 1-11 A multi-functional wheelchair with adjustable lower limb elevation angle, comprising a wheelchair body 1, characterized in that:

[0034] It also includes an adjustable leg support mechanism, a storage rack mechanism, and a height-adjustable seat plate mechanism. The wheelchair body 1 is provided with a height-adjustable seat plate mechanism, the front end of the wheelchair body 1 is symmetrically provided with adjustable leg support mechanisms, and one side of the wheelchair body 1 is provided with a storage rack mechanism.

[0035] The adjustable leg support mechanism includes a leg support rod 2, a foot pedal 3, an arc-shaped adjustment plate 4, and a fixing block 5. The fixing block 5 is mounted on the front support leg of the wheelchair body 1. The upper end of the leg support rod 2 is rotatably connected to the fixing block 5 via a pin, allowing the leg support rod 2 to rotate around the pin as an axis, thereby achieving angle adjustment. The lower end of the leg support rod 2 is provided with a foot pedal 3 for supporting the user's feet. The arc-shaped adjustment plate 4 is located at one end of the leg support rod 2 near the fixing block 5. The arc-shaped adjustment plate 4 has multiple first adjustment holes 6, with six holes forming angles of 30 degrees, 60 degrees, 90 degrees, 120 degrees, 135 degrees, and 150 degrees with the leg support rod 2, respectively. An internally threaded tube 7 is welded to one side of the front support leg of the wheelchair body 1. A fixing bolt 8 is located inside the internally threaded tube 7. The fixing bolt 8 cooperates with the first adjustment holes 6 to position the leg support rod 2. The end of the fixing bolt 8 is provided with a handle 9 for easy operation by the user.

[0036] Angle adjustment operation: When it is necessary to adjust the angle of the leg support rod 2, the user holds the handle 9, unscrews the fixing bolt 8 from the currently inserted first adjustment hole 6, then rotates the leg support rod 2 so that the target first adjustment hole 6 on the arc-shaped adjustment plate 4 is aligned with the internal threaded tube 7, and then screws the fixing bolt 8 into the target first adjustment hole 6 and the internal threaded tube 7. Through the threaded engagement between the fixing bolt 8 and the internal threaded tube 7, the leg support rod 2 is fixed at the required angle position, thereby realizing the adjustment of the lower limb elevation angle.

[0037] The shelf mechanism includes an L-shaped support rod 10, a tray 11, a baffle 12, and a lower connecting part 13. The L-shaped support rod 10 is fixed to the front support leg of the wheelchair body 1 by bolts or welding. The lower connecting part 13 is rotatably provided at one end of the L-shaped support rod 10. A locking plate 14 is symmetrically provided at one end of the L-shaped support rod 10. A locking groove 15 is symmetrically provided at the end of the lower connecting part 13 near the locking plate 14. The locking groove 15 and the locking plate 14 cooperate, allowing the lower connecting part 13 to rotate around the L-shaped support rod 10. When the tray 11 is rotated to a horizontal position, it can be pushed towards the locking plate 14, causing the locking groove 15 to engage with the locking plate 14, thus stabilizing the tray 11 in a horizontal state. Support columns 16 are provided at the four corners of the upper end of the tray 11. Baffles 12 are provided around the upper perimeter of the tray 11, with each baffle 12 located between two adjacent support columns 16. One side of the baffle 12 is rotatably connected to the support column 16 via a shaft. The other side of the baffle 12 is provided with a first circular hole 17, and the other end of the first circular hole 17 passes through the adjacent support column 16. The baffle 12 is provided with a second circular hole 18 communicating with the first circular hole 17. The diameter of the second circular hole 18 is larger than that of the first circular hole 17. The end of the second circular hole 18 away from the first circular hole 17 is provided with a cross-shaped slot 19. The first circular hole 17 is provided with a pin 20. One end of the pin 20 extends into the second circular hole 18. The end of the pin 20 extending into the second circular hole 18 is provided with a cross-shaped insert plate 30. The cross-shaped insert plate 30 and the cross-shaped slot 19 cooperate. The other end of the pin 20 is symmetrically limited by a limiting plate 21. The support column 16 is symmetrically provided with a limiting groove 22 near the limiting plate 21. The limiting plate 21 and the limiting groove 22 cooperate to limit the rotation of the pin 20, thereby stabilizing the adjustment state of the baffle 12. The tray 11 is provided with a cup holder 23 for placing cups and other items.

[0038] Operation: When the shelf is needed, the user can rotate the tray 11 as needed, and the lower connecting part 13 will rotate accordingly. Adjust the tray 11 to a horizontal position, and then push the tray 11 towards the locking plate 14 so that the locking slot 15 is locked onto the locking plate 14, securing the tray 11 to a horizontal position. Items can then be placed on the tray 11. If the baffle 12 is needed, first pull out the pin 20 on the corresponding side of the baffle 12. At this time, the limiting plate 21 leaves the limiting groove 22, and the cross-shaped insert 30 leaves the cross-shaped slot 19 and is in the second round hole 18. Then rotate the baffle 12 to a vertical position, and then push the pin 20 into the first round hole 17, so that the limiting plate 21 is inserted into the limiting groove 22 to limit the rotation of the pin 20. At this time, the cross-shaped insert will be inserted into the cross-shaped slot 19, thereby fixing the baffle 12 and preventing items from slipping. For cylindrical items such as cups, they can be placed directly in the cup holder 23.

[0039] The adjustable seat mechanism includes a seat plate 24, a support cylinder 25, and an adjusting support rod 26. The support cylinders 25 are symmetrically arranged on both sides inside the wheelchair body 1 and are fixed to the wheelchair body 1 by bolts or welding. The support cylinders 25 are provided with fixing holes 27 and positioning pins 28 are provided in the fixing holes 27. The adjusting support rods 26 are provided inside the support cylinders 25 and can move up and down inside the support cylinders 25. The adjusting support rods 26 are evenly provided with multiple second adjusting holes 29. The positioning pins 28 and the second adjusting holes 29 cooperate with each other. The lower end of the seat plate 24 is connected to the upper end of the two adjusting support rods 26.

[0040] Height adjustment operation: When it is necessary to adjust the height of the seat plate 24, first pull the positioning pin 28 out of the fixing hole 27 of the support cylinder 25 and the current second adjustment hole 29 of the adjusting rod 26, then move the adjusting rod 26 up or down so that the target second adjustment hole 29 on the adjusting rod 26 is aligned with the fixing hole 27 on the support cylinder 25, and then insert the positioning pin 28 into the fixing hole 27 and the target second adjustment hole 29, thereby fixing the adjusting rod 26 at the required height position and realizing the adjustment of the height of the seat plate 24.

[0041] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0043] In the description of the embodiments of this utility model, "a plurality of" means at least two.

[0044] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A multifunctional wheelchair with adjustable lower limb elevation angle, comprising a wheelchair body (1), characterized in that: It also includes an adjustable leg support mechanism, a storage rack mechanism and a height-adjustable seat plate mechanism. The wheelchair body (1) is provided with a height-adjustable seat plate mechanism, the front end of the wheelchair body (1) is symmetrically provided with an adjustable leg support mechanism, and one side of the wheelchair body (1) is provided with a storage rack mechanism. The adjustable leg support mechanism includes a leg support rod (2), a foot pedal (3), an arc-shaped adjustment plate (4), and a fixing block (5). The fixing block (5) is set on the front leg of the wheelchair body (1). The upper end of the leg support rod (2) is rotatably connected to the fixing block (5) by a pin. The lower end of the leg support rod (2) is provided with a foot pedal (3). The end of the leg support rod (2) near the fixing block (5) is provided with an arc-shaped adjustment plate (4). The arc-shaped adjustment plate (4) is provided with multiple first adjustment holes (6). The front leg of the wheelchair body (1) is provided with an internal threaded tube (7). The internal threaded tube (7) is provided with a fixing bolt (8). The fixing bolt (8) and the first adjustment holes (6) cooperate to position the leg support rod (2).

2. The multifunctional wheelchair with adjustable lower limb elevation angle according to claim 1, characterized in that: The first adjustment hole (6) on the arc-shaped adjustment plate (4) is provided with six holes, which are respectively at angles of 30 degrees, 60 degrees, 90 degrees, 120 degrees, 135 degrees and 150 degrees with the leg support rod (2).

3. The multifunctional wheelchair with adjustable lower limb elevation angle according to claim 1, characterized in that: The fixing bolt (8) is provided with a handle (9) at its end.

4. A multifunctional wheelchair with adjustable lower limb elevation angle according to claim 1, characterized in that: The shelf mechanism includes an L-shaped support rod (10), a tray (11), a baffle (12), and a lower connecting part (13). The L-shaped support rod (10) is mounted on the front leg of the wheelchair body (1). The lower connecting part (13) is rotatably provided at one end of the L-shaped support rod (10). A retaining plate (14) is symmetrically provided at one end of the L-shaped support rod (10). A retaining groove (15) is symmetrically provided at the end of the lower connecting part (13) near the retaining plate (14). The retaining groove (15) and the retaining plate (14) cooperate. A support column (16) is provided at each of the four corners of the upper end of the tray (11). A baffle (12) is provided around the upper end of the tray (11). The baffle (12) is located between two adjacent support columns (16). One side of the baffle (12) is rotatably connected to the support column (16) via a shaft. The other side of the baffle (12) is provided with a first circular hole (17). The other end of the first circular hole (17) passes through the adjacent support column (16). The baffle (12) is provided with a second circular hole (18) that communicates with the first circular hole (17). The diameter of the second circular hole (18) is larger than that of the first circular hole (17). The end of the second circular hole (18) away from the first circular hole (17) is provided with a cross-shaped slot (19). The first circular hole (17) is provided with a pin (20). One end of the pin (20) extends into the second circular hole (18). The end of the pin (20) extending into the second circular hole (18) is provided with a cross-shaped insert plate (30). The cross-shaped insert plate (30) and the cross-shaped slot (19) cooperate. The other end of the pin (20) is symmetrically limited by a limiting plate (21). The support column (16) is symmetrically provided with a limiting groove (22) near the limiting plate (21). The limiting plate (21) and the limiting groove (22) cooperate.

5. A multifunctional wheelchair with adjustable lower limb elevation angle according to claim 4, characterized in that: The tray (11) is provided with a cup holder (23).

6. A multifunctional wheelchair with adjustable lower limb elevation angle according to claim 1, characterized in that: The adjustable seat mechanism includes a seat plate (24), a support cylinder (25), and an adjusting rod (26). The support cylinder (25) is symmetrically arranged on both sides inside the wheelchair body (1). The support cylinder (25) is provided with a fixing hole (27). The fixing hole (27) is provided with a positioning pin (28). The support cylinder (25) is provided with an adjusting rod (26) that can move up and down inside the support cylinder (25). The adjusting rod (26) is provided with a plurality of second adjusting holes (29) evenly arranged. The positioning pin (28) cooperates with the second adjusting holes (29). The lower end of the seat plate (24) is connected to the upper end of the two adjusting rods (26).

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