A wheelchair that folds conveniently

Abstract

The utility model discloses a convenient folding wheelchair, including setting in the support framework of seat plate bottom and rotating connection on the backrest of seat plate, the back of backrest is provided with support frame, the lower part of support frame is the fixed rod of hollow shape of clamping in support framework, be provided with the clamping mechanism for clamping in support framework on fixed rod, still be provided with the control mechanism for controlling the clamping mechanism and disconnecting support framework on the backrest and be connected on the clamping mechanism, through control mechanism and drive the clamping mechanism and disconnect from support framework, utilize the rotary connection relation between backrest and seat plate, can directly fold backrest to seat plate, realize quick folding and accomodate, greatly simplifyed the folding step, avoided the complicated process that the traditional wheelchair needed multi -step folding.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair technology, and in particular to a wheelchair that is easy to fold. Background Technology

[0002] Wheelchairs, as an important assistive mobility tool, are widely used in the daily lives of the elderly, disabled, and those with mobility impairments. However, existing wheelchairs have many inconveniences in terms of folding, causing considerable trouble for users.

[0003] Currently, most wheelchairs use a multi-step folding method. Users need to fold the backrest of the wheelchair backward first, which usually requires both hands to operate at the same time and requires a certain amount of strength and skill. This is difficult for users with less strength or limited flexibility. Then, the seat needs to be folded down. The whole process is cumbersome and complicated, and requires a lot of time and effort. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, this utility model provides a wheelchair that is easy to fold.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A foldable wheelchair includes a support frame located at the bottom of a seat and a backrest rotatably connected to the seat. The back of the backrest has a support frame, and the lower part of the support frame has a hollow fixing rod that engages with the support frame. The fixing rod is provided with a locking mechanism for engaging with the support frame. The backrest is also provided with a control mechanism connected to the locking mechanism for controlling the locking mechanism to disengage from the support frame.

[0007] Furthermore, the locking mechanism includes a locking member built into the fixed rod and a fixing bolt passing through the fixed rod. One end of the locking member is exposed outside the end of the fixed rod near the support frame and is locked onto the support frame.

[0008] Furthermore, the support frame has a locking opening corresponding to the locking mechanism. The inner wall of the locking opening is provided with a protrusion. The end of the locking member is locked in the locking opening, and the outer wall of the part of the locking member locked in the locking opening is provided with a positioning groove that matches the protrusion.

[0009] Furthermore, the control mechanism is movably disposed on the upper part of the fixed rod. The control mechanism includes a movable component movably connected to the fixed rod and a connecting component fixed to the movable component and located inside the fixed rod. The other end of the connecting component is fixedly connected to the engaging component.

[0010] Furthermore, the outer wall of the part of the fixed rod where the movable part is provided is provided with a through groove, and the movable part is provided with a slider that is slidably connected in the groove, and one end of the connecting part is fixed to the slider.

[0011] Furthermore, the movable component is a part that is fastened to the fixed rod, and an extension plate is provided on the side away from the fixed rod.

[0012] Furthermore, the engaging mechanism also includes a compression elastic member that is elastically connected to the engaging member. The engaging member has a receiving groove for accommodating the compression elastic member, and the fixing rod is also provided with a fixing bolt that passes through the fixing rod and the engaging member in sequence.

[0013] Furthermore, one end of the compression elastic member abuts against the outer wall of the fixing bolt, and the other end abuts against the inner wall of the receiving groove near the end of the engaging member, pushing the engaging member toward the opening direction of the fixing rod end.

[0014] Furthermore, the engaging component is also provided with a connecting portion that can be detachably connected to the connector, and the connecting portion is provided with a plurality of openings for connecting to the end of the connector.

[0015] Furthermore, the connector is a strip-shaped component with its end connected to an opening, and the openings are arranged in a vertical array on the connector.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] This invention uses a control mechanism to detach the locking mechanism from the support frame. Utilizing the rotational connection between the backrest and seat, the backrest can be directly folded onto the seat, achieving rapid folding and storage. This greatly simplifies the folding process and avoids the cumbersome multi-step folding process required by traditional wheelchairs. Through the cooperation of the control mechanism and the locking mechanism, the folding operation is concentrated on the backrest, reducing the number of parts that need to be operated and lowering the complexity of folding. Because this invention simplifies the folding process, reduces the number of operating parts, and makes operation more convenient, it can significantly shorten the time required for wheelchair folding. Users can complete the folding and storage of the wheelchair in a short time, improving folding efficiency and making it convenient to quickly fold the wheelchair when needed for easy carrying and storage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a foldable wheelchair according to the present invention;

[0019] Figure 2 This is a schematic diagram showing the folded state of a wheelchair that is easy to fold according to this utility model;

[0020] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0021] Figure 4 for Figure 2 Enlarged view of part B in the middle;

[0022] Figure 5 This is a three-dimensional cross-sectional view of a foldable wheelchair according to the present invention.

[0023] Figure 6 for Figure 5 Enlarged view of a section in the middle C;

[0024] Figure 7 for Figure 5 Enlarged view of a section in part D;

[0025] Figure 8 This is a side sectional view of a foldable wheelchair according to the present invention.

[0026] Figure 9 for Figure 8 A magnified view of part E in the middle.

[0027] 1. Seat plate; 2. Support frame; 3. Backrest; 4. Support frame; 5. Fixing rod; 6. Engaging mechanism; 7. Control mechanism; 8. Engaging component; 9. Fixing bolt; 10. Engaging opening; 11. Protrusion; 12. Positioning groove; 13. Moving component; 14. Connecting component; 15. Slide groove; 16. Slider; 17. Extension plate; 18. Compression elastic component; 19. Receiving groove; 20. Opening; 21. First folding bracket; 22. Second folding bracket; 23. Third folding bracket; 24. Front wheel; 25. Rear wheel; 26. Stabilizing wheel; 27. Power supply; 28. Foot pedal; 29. ​​Limiting hole; 30. Limiting plate; 31. Snap-fit ​​post; 32. Connecting part. Detailed Implementation

[0028] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0029] like Figure 1-9As shown, this embodiment provides a foldable wheelchair, including a support frame 2 set at the bottom of the seat plate 1 and a backrest 3 rotatably connected to the seat plate 1. The back of the backrest 3 is provided with a support frame 4. The lower part of the support frame 4 is a hollow fixing rod 5 that engages with the support frame 2. The fixing rod 5 is provided with a locking mechanism 6 for engaging with the support frame 2. The backrest 3 is also provided with a control mechanism 7 connected to the locking mechanism 6 for controlling the locking mechanism 6 to disengage from the support frame 2.

[0030] The seat 1 is the main load-bearing component of the wheelchair. A support frame 2 is set at its bottom. The support frame 2 is usually made of high-strength metal materials, such as aluminum alloy or steel, to provide sufficient support and stability. The backrest 3 is mounted on the seat 1 through rotating connecting parts 31, such as hinges, so that the backrest 3 can rotate around the seat 1, thereby realizing the folding function.

[0031] In this embodiment, a locking mechanism 6 is provided on the fixing rod 5 to fix the backrest 3 to the support frame 2. The control mechanism 7 is connected to the locking mechanism 6. By operating the control mechanism 7, the movement of the locking mechanism 6 can be controlled, thereby disengaging it from the support frame 2 and putting the backrest 3 in an active state. This allows for further folding and enables the backrest 3 to be quickly removed from the support frame 2. The simple operation steps avoid a series of problems caused by the complex process of folding the wheelchair.

[0032] Furthermore, the engaging mechanism 6 includes an engaging member 8 built into the fixing rod 5 and a fixing bolt 9 passing through the fixing rod 5. One end of the engaging member 8 is exposed outside the end of the fixing rod 5 near the supporting frame 2 and is engaged with the supporting frame 2.

[0033] Furthermore, the support frame 2 has a locking opening 10 corresponding to the locking mechanism 6. The inner wall of the locking opening 10 is provided with a protrusion 11. The end of the locking member 8 is locked in the locking opening 10, and the outer wall of the part of the locking member 8 locked in the locking opening 10 is provided with a positioning groove 12 that matches the protrusion 11.

[0034] The shape and size of the locking opening 10 match the exposed end of the locking component 8 to ensure that the locking component 8 can be tightly locked. Specifically, a protrusion 11 is provided in the locking opening 10. The function of the protrusion 11 is to increase the stability of the locking and prevent the locking component 8 from loosening in the locking opening 10. Furthermore, a positioning groove 12 is provided on the locking component 8 to match the protrusion 11 in the locking opening 10. When the locking component 8 is locked in the locking opening 10, the positioning groove 12 and the protrusion 11 are engaged, which further enhances the stability of the locking.

[0035] In this embodiment, the outer edge of the protrusion 11 is rounded to facilitate smooth insertion into the positioning groove 12.

[0036] Furthermore, the control mechanism 7 is movably disposed on the upper part of the fixed rod 5. The control mechanism 7 includes a movable part 13 movably connected to the fixed rod 5 and a connecting part 14 fixed on the movable part 13 and located inside the fixed rod 5. The other end of the connecting part 14 is fixedly connected to the engaging part 8.

[0037] Furthermore, the outer wall of the part of the fixed rod 5 where the movable part 13 is provided is provided with a through groove 15, and the movable part 13 is provided with a slider 16 that is slidably connected in the groove 15, and one end of the connecting part 14 is fixed to the slider 16.

[0038] Furthermore, the movable member 13 is a component that is fastened to the fixed rod 5, and an extension plate 17 is provided on the side away from the fixed rod 5.

[0039] The movable part 13 can move on the fixed rod 5 by sliding. The other end of the connecting part 14 is fixedly connected to the locking part 8. The function of the connecting part 14 is to transmit the movement of the movable part 13 to the locking part 8. By operating the movable part 13, the connecting part 14 and the locking part 8 can be driven to move. When the movable part 13 moves, the connecting part 14 pulls the locking part 8, causing it to disengage from the support frame 2, thereby releasing the backrest 3.

[0040] Specifically, a through groove 15 is provided on the outer wall of the part of the fixed rod 5 where the movable part 13 is located. The shape and size of the groove 15 match the slider 16 on the movable part 13, ensuring that the slider 16 can slide smoothly in the groove 15. The slider 16, which is slidably connected in the groove 15, restricts the movement direction of the movable part 13 and ensures that it moves along the axial direction of the fixed rod 5. When the slider 16 slides in the groove 15, it drives the connecting part 14 and the locking part 8 to move, thereby releasing the locking mechanism 6.

[0041] The design of the extension plate 17 increases the lever length for operation, making it easier for users to operate the moving part 13. Users can pull the extension plate 17 with their fingers to move the moving part 13 within the slide groove 15.

[0042] Furthermore, the engaging mechanism 6 also includes a compression elastic member 18 that is elastically connected to the engaging member 8. The engaging member 8 has a receiving groove 19 for accommodating the compression elastic member 18. The fixing rod 5 is also provided with a fixing bolt 9 that passes through the fixing rod 5 and the engaging member 8 in sequence.

[0043] Furthermore, one end of the compression elastic member 18 abuts against the outer wall of the fixing bolt 9, and the other end abuts against the inner wall of the receiving groove 19 near the end of the engaging member 8, pushing the engaging member 8 toward the opening direction of the end of the fixing rod 5.

[0044] In some embodiments, the compression spring 18 is typically a spring, installed in the receiving groove 19 of the engaging member 8. The fixing bolt 9 serves to fix the position of the compression spring 18 and provide support for it. Specifically, one end of the compression spring 18 abuts against the outer wall of the fixing bolt 9, and the other end abuts against the inner wall of the receiving groove 19 near the end of the engaging member 8. When the engaging member 8 is released, the elastic force of the compression spring 18 pushes the engaging member 8 toward the opening of the fixing rod 5, causing it to automatically reset, thereby driving the moving member 13 to reset as well.

[0045] Furthermore, the engaging member 8 is also provided with a connecting part 31 that is detachably connected to the connecting member 14, and the connecting part 31 is provided with a plurality of openings 20 for connecting to the end of the connecting member 14.

[0046] Furthermore, the connector 14 is a strip-shaped component, with its end connected to the opening 20, and a plurality of the openings 20 are holes arranged in a vertical array on the connector 31.

[0047] In some embodiments, the user can select different openings 20 for connection as needed, thereby adjusting the engagement depth of the engaging member 8.

[0048] In this embodiment, the fixed rod 5 is also symmetrically provided with a pulley system at one end near the support frame 2, which is used for the ground movement of the present invention when it is folded, without the need to lift it.

[0049] Furthermore, the support frame 2 includes a first folding bracket 21, a second folding bracket 22, and a third folding bracket 23. The first folding bracket 21 is equipped with a seat plate 1. The second folding bracket 22 is rotatably connected to one end of the first folding bracket 21 and is used to connect the front wheel 24. The other end of the first folding bracket 21 is equipped with a rear wheel 25 and a stabilizing wheel 26. The middle part of the first folding bracket 21 has reserved space for mounting a power supply 27. The third folding bracket 23 is rotatably connected to the end of the first folding bracket 21 near the front wheel 24 and is used to install a foot pedal 28.

[0050] Furthermore, a limiting plate 30 with a limiting hole 29 is provided on one side of the first folding bracket 21, and a locking post 31 is provided on one side of the seat plate 1. When the present invention is in the folded state, the locking post 31 is locked into the limiting plate 30 on the limiting plate 30 to prevent the seat plate 1 from falling off. The limiting plate 30 has a certain elasticity. By bending the limiting plate 30, the locking post 31 can be disengaged from the limiting hole 29.

[0051] Furthermore, armrests are provided on both sides of the backrest 3, and a controller is provided on one of the armrests for controlling the movement of this utility model.

[0052] The working process and principle of this utility model are as follows:

[0053] The wheelchair of this utility model is designed with full consideration of the convenience and speed of folding. When the wheelchair needs to be folded, the user first releases the backrest 3 by operating the control mechanism 7. Specifically, the user pulls the control mechanism 7 on the backrest 3. This mechanism drives the locking part 8 in the locking mechanism 6 through the connecting part 14. The locking part 8 is originally locked in the locking port 10 of the support frame 2. The positioning groove 12 at its end engages with the protrusion 11 in the locking port 10 to ensure the stability of the backrest 3 during use. When the control mechanism 7 is operated, the locking part 8 is pulled and disengaged from the locking port 10, so that the backrest 3 is no longer fixed to the support frame 2. At this time, the backrest 3 can rotate freely around the rotating connecting part 31 on the seat plate 1, thereby realizing the folding function. This process is simple and quick, avoiding the complicated operation of traditional wheelchair folding and greatly improving folding efficiency. In addition, the pulley group on the fixing rod 5 can be moved to the ground in the folded state, so that the folded wheelchair does not need to be lifted, further enhancing its portability.

[0054] The specific embodiments of the utility model have been described in detail above, but they are only examples. The utility model is not limited to the specific embodiments described above. Those skilled in the art should understand that the embodiments and descriptions above are merely illustrative of the principles of the utility model. Various changes and modifications can be made to the utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the utility model as claimed. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A foldable wheelchair, characterized in that: It includes a support frame (2) set at the bottom of the seat plate (1) and a backrest (3) rotatably connected to the seat plate (1). The back of the backrest (3) is provided with a support frame (4). The lower part of the support frame (4) is a hollow fixing rod (5) that engages with the support frame (2). The fixing rod (5) is provided with a locking mechanism (6) for engaging with the support frame (2). The backrest (3) is also provided with a control mechanism (7) connected to the locking mechanism (6) for controlling the locking mechanism (6) to disengage from the support frame (2).

2. The foldable wheelchair according to claim 1, characterized in that: The locking mechanism (6) includes a locking member (8) built into the fixing rod (5) and a fixing bolt (9) passing through the fixing rod (5). One end of the locking member (8) is exposed outside the fixing rod (5) near the supporting frame (2) and is locked onto the supporting frame (2).

3. A foldable wheelchair according to claim 2, characterized in that: The support frame (2) has a locking opening (10) corresponding to the locking mechanism (6). The inner wall of the locking opening (10) is provided with a protrusion (11). The end of the locking member (8) is locked in the locking opening (10), and the outer wall of the part of the locking member (8) locked in the locking opening (10) is provided with a positioning groove (12) that matches the protrusion (11).

4. A foldable wheelchair according to claim 1, characterized in that: The control mechanism (7) is movably disposed on the upper part of the fixed rod (5). The control mechanism (7) includes a movable part (13) movably connected to the fixed rod (5) and a connecting part (14) fixed on the movable part (13) and located inside the fixed rod (5). The other end of the connecting part (14) is fixedly connected to the locking part (8).

5. A foldable wheelchair according to claim 4, characterized in that: The fixed rod (5) has a through groove (15) on the outer wall of the part where the movable part (13) is provided. The movable part (13) is provided with a slider (16) that is slidably connected in the groove (15). One end of the connecting part (14) is fixed on the slider (16).

6. A foldable wheelchair according to claim 4, characterized in that: The movable part (13) is a component that is fastened to the fixed rod (5), and an extension plate (17) is provided on the side away from the fixed rod (5).

7. A foldable wheelchair according to claim 1, characterized in that: The locking mechanism (6) further includes a compression elastic member (18) that is elastically connected to the locking member (8). The locking member (8) is provided with a receiving groove (19) for accommodating the compression elastic member (18). The fixing rod (5) is also provided with a fixing bolt (9) that passes through the fixing rod (5) and the locking member (8) in sequence.

8. A foldable wheelchair according to claim 7, characterized in that: One end of the compression elastic member (18) abuts against the outer wall of the fixing bolt (9), and the other end abuts against the inner wall of the receiving groove (19) near the end of the engaging member (8), pushing the engaging member (8) toward the opening direction of the fixing rod (5).

9. A foldable wheelchair according to claim 2, characterized in that: The engaging member (8) is also provided with a connecting part (31) that can be detachably connected to the connecting member (14), and the connecting part (31) is provided with a plurality of openings for connecting to the end of the connecting member (14).

10. A foldable wheelchair according to claim 4, characterized in that: The connector (14) is a strip-shaped component with its end connected to an opening. Several of the openings are holes arranged in a vertical array on the connector (31).

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