Foldable wheelchair
By designing a foldable wheelchair that includes a backrest frame, support frame, and folding components, and using elastic elements to drive the limiting plate to achieve fixation and folding, the problem of inconvenient folding of existing wheelchairs is solved, and the simplicity of operation and ease of use are improved.
Patent Information
- Application Number
- CN202423057896.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing foldable wheelchairs are cumbersome to fold and inconvenient to use.
The design includes a backrest frame, a support frame, a connecting support frame, and a folding assembly. The limit plate is driven by an elastic element to abut against the limit post. It remains fixed during normal use, and when folding is required, the limit plate is bent to achieve rotation and folding.
It enables simple and convenient wheelchair folding operation, improving ease of use.
Smart Images
Figure CN223715925U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a wheelchair technical field, concretely relates to a foldable wheelchair. BACKGROUND
[0002] The wheelchair is an important tool for assisting patients in treatment and recovery, and it is not only a walking aid for the wounded, but more importantly, they can exercise their bodies and participate in social activities with the help of the wheelchair. The ordinary wheelchair is generally composed of a wheelchair frame, wheels and a backrest, and has basic seating and moving functions.
[0003] The volume of the wheelchair is generally large, and the folding method is usually used to reduce the volume for convenient storage and transportation. The existing foldable wheelchair is generally folded through a folding mechanism, which can reduce the volume to a certain extent, but the existing folding mechanism is relatively troublesome to operate and not very convenient to use. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a foldable wheelchair, which aims to solve the problem of inconvenient folding of the existing foldable wheelchair.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] A foldable wheelchair is provided, comprising:
[0007] A backrest frame comprising a backrest crossbar;
[0008] A first support frame comprising a first side rod and a first crossbar, the first crossbar being connected to the first side rod;
[0009] A second support frame comprising a second side rod and a second crossbar, the second crossbar being connected to the second side rod, and the second side rod being rotationally connected to the first side rod;
[0010] An adapter support frame comprising a first connecting piece, one end of the first connecting piece being rotationally connected to the second side rod, and the other end of the first connecting piece being rotationally connected to the backrest crossbar;
[0011] A folding assembly comprising a first limiting column, a second limiting column, a limiting piece and an elastic piece, the first limiting column being connected to the first connecting piece, the second limiting column being connected to the first side rod, the limiting piece being rotationally connected to the second side rod, and the elastic piece being connected to the limiting piece to drive the limiting piece to abut against the first limiting column and the second limiting column.
[0012] Optionally, the folding assembly further comprises a pull rod connected to the limiting piece.
[0013] Optionally, the limiting sheet is provided with a first limiting groove and a second limiting groove, the first limiting groove is clamped on the first limiting column, and the second limiting groove is abutted on the second limiting column.
[0014] Optionally, the folding assembly further comprises a first connecting column, a second connecting column and a folding connecting sheet, the first connecting column is connected to the limiting sheet, the second connecting column is connected to the folding connecting sheet, the folding connecting sheet is fixedly connected to the first horizontal rod, the elastic member is a tension spring, one end of the elastic member is connected to the first connecting column, and the other end of the elastic member is connected to the second connecting column.
[0015] Optionally, the connecting support frame further comprises a second connecting sheet, a connecting support rod and a connecting support seat, the backrest frame further comprises a backrest connecting sheet, the backrest connecting sheet is fixedly connected to the backrest horizontal rod, the first connecting sheet is rotationally connected to the backrest connecting sheet, one end of the second connecting sheet is rotationally connected to the backrest connecting sheet, the other end of the second connecting sheet is fixedly connected to the connecting support rod, the connecting support seat is connected to the connecting support rod, and the connecting support seat is provided with a connecting support groove for supporting the backrest horizontal rod.
[0016] Optionally, the foldable wheelchair further comprises a seat frame, the backrest frame further comprises a backrest vertical rod, the backrest vertical rod is connected to the backrest horizontal rod, one end of the seat frame is rotationally connected to the backrest vertical rod, and the other end of the seat frame is provided with a fixed support portion, the first side rod, the second side rod and the limiting sheet are all rotationally connected to the fixed support portion.
[0017] Optionally, the limiting sheet is provided with an avoiding groove in the side close to the backrest frame, and the avoiding groove is arc-shaped.
[0018] Optionally, the foldable wheelchair further comprises a foot pedal rod, and the foot pedal rod is rotationally connected to the second horizontal rod.
[0019] Optionally, the foldable wheelchair further comprises front wheels and rear wheels, the front wheels are connected to the second side rod, and the rear wheels are connected to the first side rod.
[0020] Optionally, the foldable wheelchair further comprises a shock absorption assembly, and the second side rod is connected with the front wheels through the shock absorption assembly.
[0021] Compared with the prior art, the foldable wheelchair has the advantages that:
[0022] In the foldable wheelchair provided by the utility model, when normally used, the elastic member drives the limiting sheet to abut against the first limiting column and the second limiting column, at this time, the first supporting frame, the second supporting frame, the connecting supporting frame and the backrest horizontal rod cannot move relative to each other, and the whole is in a fixed state, that is, the whole wheelchair is in a state of being unable to be folded, and can provide a supporting effect for the user, when folding is needed, the limiting sheet is moved, the limiting sheet is driven to leave the first limiting column and the second limiting column, at this time, the first supporting frame, the second supporting frame, the connecting supporting frame and the backrest horizontal rod are connected through the rotating connection between each other to form a linkage relationship, the first supporting frame, the second supporting frame and the connecting supporting frame can be folded by rotating, and the whole wheelchair can realize the folding function, the folding of the whole wheelchair can be completed through the simple folding assembly, the operation is simpler, and the use is more convenient. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without paying the creative labor.
[0024] Figure 1 It is a structure schematic view of the foldable wheelchair of the utility model;
[0025] Figure 2 It is a side view of the foldable wheelchair of the utility model;
[0026] Figure 3 It is another angle structure schematic view of the foldable wheelchair of the utility model;
[0027] Figure 4 It is Figure 3 It is an enlarged schematic view of A in the middle;
[0028] Figure 5 It is a structure schematic view of the folding assembly of the foldable wheelchair of the utility model;
[0029] Figure 6 It is a structure schematic view of the limiting sheet of the foldable wheelchair of the utility model;
[0030] Figure 7 It is a structure schematic view of the foldable wheelchair in the folded state.
[0031] In the figure: 1, backrest frame; 11, backrest crossbar; 12, backrest connecting piece; 13, backrest vertical rod; 2, first support frame; 21, first side rod; 22, first crossbar; 3, second support frame; 31, second side rod; 32, second crossbar; 4, connecting support frame; 41, first connecting piece; 42, second connecting piece; 43, connecting support rod; 44, connecting support seat; 5, folding assembly; 51, first limiting column; 52, second limiting column; 53, limiting piece; 531, first limiting groove; 532, second limiting groove; 533, avoiding groove; 54, elastic piece; 55, pull rod; 56, first connecting column; 57, second connecting column; 58, folding connecting piece; 6, seat frame; 61, fixed support part; 7, foot pedal rod; 8, front wheel; 9, rear wheel; 10, shock absorbing assembly. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.
[0033] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0034] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.
[0035] The technical solutions of the present application will be described below. Figures 1 to 7 The foldable wheelchair of the present application is described.
[0036] As Figures 1 to 7The utility model provides a kind of foldable wheelchair, including backrest frame 1, first support frame 2, second support frame 3, link support frame 4 and folding assembly 5, backrest frame 1 includes backrest cross bar 11, first support frame 2 includes first side rod 21 and first cross bar 22, and first cross bar 22 is connected to first side rod 21, second support frame 3 includes second side rod 31 and second cross bar 32, and second cross bar 32 is connected to second side rod 31, and second side rod 31 is rotatably connected to first side rod 21, link support frame 4 includes first connecting piece 41, and one end of first connecting piece 41 is rotatably connected to second side rod 31, and the other end of first connecting piece 41 is rotatably connected to backrest cross bar 11;Folding assembly 5 includes first limiting post 51, second limiting post 52, limiting piece 53 and elastic member 54, and first limiting post 51 is connected to first connecting piece 41, and second limiting post 52 is connected to first side rod 21, and limiting piece 53 is rotatably connected to second side rod 31, and elastic member 54 is connected with limiting piece 53, to drive limiting piece 53 and abut on first limiting post 51 and second limiting post 52.
[0037] For the convenience of explanation, in the embodiment, each orientation is as shown. Figure 1
[0038] In the foldable wheelchair provided in the embodiment, when normally used, elastic member 54 drives limiting piece 53 to abut on first limiting post 51 and second limiting post 52, at this time, first support frame 2, second support frame 3, link support frame 4 and backrest cross bar 11 cannot move relative to each other, and the whole is in a fixed state, that is, the entire wheelchair is in a state that cannot be folded, and can provide support for the user, when folding is needed, limiting piece 53 is moved, to drive limiting piece 53 to move away from first limiting post 51 and second limiting post 52, at this time, first support frame 2, second support frame 3, link support frame 4 and backrest cross bar 11 can complete rotary folding through the linkage relationship formed by the rotary connection therebetween, and the entire wheelchair can realize folding function, and the folding of the entire wheelchair can be completed through simple folding assembly 5, which is more simple to operate and more convenient to use.
[0039] In some embodiments, folding assembly 5 further includes pull rod 55, and pull rod 55 is connected to limiting piece 53, and pull rod 55 is located on the front side of limiting piece 53, by arranging pull rod 55, the user can drive limiting piece 53 to move away from first limiting post 51 and second limiting post 52 by pulling pull rod 55, which is more convenient to operate.
[0040] In some embodiments, the limiting sheet 53 is provided with a first limiting groove 531 and a second limiting groove 532, the first limiting groove 531 is clamped to the first limiting column 51, and the second limiting groove 532 abuts against the second limiting column 52, so that the limiting sheet 53 can be more stably clamped to the first limiting column 51 and abut against the second limiting column 52, thereby achieving a more stable locking function and preventing the first support frame 2, the second support frame 3 and the connecting support frame 4 from rotating relative to each other, ensuring that the entire wheelchair is in an unfolded state and providing better support for the user.
[0041] In some embodiments, the folding assembly 5 further comprises a first connecting column 56, a second connecting column 57 and a folding connecting sheet 58, the first connecting column 56 is connected to the limiting sheet 53, the second connecting column 57 is connected to the folding connecting sheet 58, and the folding connecting sheet 58 is fixedly connected to the first cross rod 22, the elastic member 54 is a tension spring, one end of the elastic member 54 is connected to the first connecting column 56, and the other end of the elastic member 54 is connected to the second connecting column 57, so that the position of the elastic member 54 can be better fixed by arranging the first connecting column 56 and the second connecting column 57.
[0042] In some embodiments, the connecting support frame 4 further comprises a second connecting sheet 42, a connecting support rod 43 and a connecting support seat 44, the backrest frame 1 further comprises a backrest connecting sheet 12, the backrest connecting sheet 12 is fixedly connected to the backrest cross rod 11, the first connecting sheet 41 is rotationally connected to the backrest connecting sheet 12, one end of the second connecting sheet 42 is rotationally connected to the backrest connecting sheet 12, the other end of the second connecting sheet 42 is fixedly connected to the connecting support rod 43, the connecting support seat 44 is connected to the connecting support rod 43, and the connecting support seat 44 is provided with a connecting support groove for supporting the backrest cross rod 11, so that the connecting support seat 44 is located below the backrest cross rod 11 during normal use, thereby supporting the backrest cross rod 11 and improving the support capacity, and the connecting support seat 44 will move away from the backrest cross rod 11 along with the connecting support rod 43 during folding, thereby not affecting the subsequent folding and achieving better functionality.
[0043] In some embodiments, the foldable wheelchair further comprises a seat frame 6, and the backrest frame 1 further comprises a backrest vertical rod 13, the backrest vertical rod 13 is connected to the backrest cross rod 11, one end of the seat frame 6 is rotationally connected to the backrest vertical rod 13, and the other end of the seat frame 6 is provided with a fixed support portion 61, the first side rod 21, the second side rod 31 and the limiting sheet 53 are all rotationally connected to the fixed support portion 61, and the fixed support portion 61 provides rotational support and stability during folding.
[0044] In some embodiments, the limiting sheet 53 is provided with an avoiding groove 533 near one side of the backrest frame 1, the avoiding groove 533 is arc-shaped and serves to avoid some components, thereby making the overall structure more reasonable.
[0045] In some embodiments, the foldable wheelchair further comprises a footrest rod 7, which is rotatably connected to the second cross rod 32, and is used to mount a footrest, thus providing better support.
[0046] In some embodiments, the foldable wheelchair further comprises a front wheel 8 and a rear wheel 9, wherein the front wheel 8 is connected to the second side rod 31, and the rear wheel 9 is connected to the first side rod 21, thus facilitating the movement of the whole wheelchair.
[0047] In some embodiments, the foldable wheelchair further comprises a shock absorption assembly 10, by which the second side rod 31 is connected to the front wheel 8, thus providing good shock absorption and making the ride more comfortable.
[0048] The above description is only an embodiment of the present application, and does not limit the patent range of the present application. Any equivalent structure or equivalent process conversion, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.
Claims
1. A foldable wheelchair, characterized by The utility model relates to a folding chair, which comprises: a backrest frame (1) comprising a backrest crossbar (11); a first support frame (2) comprising a first side bar (21) and a first crossbar (22) connected to the first side bar (21); a second support frame (3) comprising a second side bar (31) and a second crossbar (32) connected to the second side bar (31), the second side bar (31) being rotatably connected to the first side bar (21); a connecting support frame (4) comprising a first connecting piece (41), one end of the first connecting piece (41) being rotatably connected to the second side bar (31), and the other end of the first connecting piece (41) being rotatably connected to the backrest crossbar (11); a folding assembly (5) comprising a first limiting column (51), a second limiting column (52), a limiting piece (53), and an elastic member (54), the first limiting column (51) being connected to the first connecting piece (41), the second limiting column (52) being connected to the first side bar (21), the limiting piece (53) being rotatably connected to the second side bar (31), and the elastic member (54) being connected to the limiting piece (53) to drive the limiting piece (53) to abut against the first limiting column (51) and the second limiting column (52).
2. The foldable wheelchair of claim 1, wherein, The folding assembly (5) further comprises a pull rod (55) connected to the limiting piece (53).
3. The foldable wheelchair of claim 2, wherein, The limiting piece (53) is provided with a first limiting groove (531) and a second limiting groove (532), the first limiting groove (531) being clamped to the first limiting column (51), and the second limiting groove (532) abutting against the second limiting column (52).
4. The foldable wheelchair of claim 3, wherein, The folding assembly (5) further comprises a first connecting column (56), a second connecting column (57), and a folding connecting piece (58), the first connecting column (56) being connected to the limiting piece (53), the second connecting column (57) being connected to the folding connecting piece (58), the folding connecting piece (58) being fixedly connected to the first crossbar (22), the elastic member (54) being a tension spring, one end of the elastic member (54) being connected to the first connecting column (56), and the other end of the elastic member (54) being connected to the second connecting column (57).
5. The foldable wheelchair of claim 4, wherein, The connecting support frame (4) further comprises a second connecting plate (42), a connecting support rod (43) and a connecting support base (44), the back frame (1) further comprises a back connecting plate (12), the back connecting plate (12) is fixedly connected to the back cross rod (11), the first connecting plate (41) is rotatably connected to the back connecting plate (12), one end of the second connecting plate (42) is rotatably connected to the back connecting plate (12), the other end of the second connecting plate (42) is fixedly connected to the connecting support rod (43), the connecting support base (44) is connected to the connecting support rod (43), and the connecting support base (44) is provided with a connecting support groove for supporting the back cross rod (11).
6. The foldable wheelchair of claim 5, wherein, The foldable wheelchair further comprises a seat frame (6), the back frame (1) further comprises a back vertical rod (13), the back vertical rod (13) is connected to the back cross rod (11), one end of the seat frame (6) is rotatably connected to the back vertical rod (13), and the other end of the seat frame (6) is provided with a fixed support portion (61), the first side rod (21), the second side rod (31) and the limiting plate (53) are all rotatably connected to the fixed support portion (61).
7. The foldable wheelchair of claim 1, wherein, The limiting plate (53) is provided with an avoiding groove (533) close to one side of the back frame (1), and the avoiding groove (533) is arc-shaped.
8. The foldable wheelchair of claim 1, wherein, The foldable wheelchair further comprises a foot pedal rod (7), and the foot pedal rod (7) is rotatably connected to the second cross rod (32).
9. The foldable wheelchair of claim 1, wherein, The foldable wheelchair further comprises a front wheel (8) and a rear wheel (9), the front wheel (8) is connected to the second side rod (31), and the rear wheel (9) is connected to the first side rod (21).
10. The foldable wheelchair of claim 9, wherein, The foldable wheelchair further comprises a shock absorption assembly (10), and the second side rod (31) is connected with the front wheel (8) through the shock absorption assembly (10).