Electric folding wheelchair

Abstract

The utility model discloses an electric folding wheelchair which comprises a frame and a seat frame, one end of the frame is further movably connected with a backrest frame, the outer side of the frame is movably connected with a main beam, the seat frame is movably connected with the backrest frame, the backrest frame is connected with an armrest frame located on the upper portion of the seat frame, and the front section of the frame is movably connected with a pedal assembly. A folding adjusting mechanism is connected among the frame, the main beam and the seat frame, the folding adjusting mechanism is electrically driven, the front end of the frame is connected with a front wheelchair wheel, and the lower end part of the main beam is connected with a rear electric driving wheel. Compared with the prior art, the electric folding wheelchair has the advantages of being convenient to operate and use, thorough in folding, good in folding effect and high in reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wheelchairs, in particular to an electric folding wheelchair. Background Art

[0002] Wheelchairs are a means of transportation and a commonly used medical rehabilitation device for people with physical disabilities and limited mobility. They are also a means for users to exercise and participate in social activities.

[0003] Electric wheelchairs are a type of wheelchair that can be driven by electricity and are very common in our daily life. Traditional electric wheelchairs usually take up a large space when not in use, and are inconvenient to store and transport. In response to this, electric wheelchairs that can be folded have emerged. However, the existing foldable electric wheelchairs are often not folded thoroughly, and are inconvenient to store. They often require two hands to fold and unfold the wheelchair, one hand to open the locking mechanism and the other hand to fold it. Some wheelchairs even have more complicated locking mechanisms and a large unlocking force, which makes them very inconvenient to operate. Most patients do not have normal and healthy strength, so unlocking them is particularly troublesome. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the above technical defects and provide an electric folding wheelchair which is easy to operate and use, can be folded completely, can be folded electrically, and has high reliability.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is as follows: an electric folding wheelchair, comprising a frame and a seat frame, one end of the frame is also movably connected to a backrest frame, the outer side of the frame is movably connected to a main beam, the seat frame is movably connected to the backrest frame, the backrest frame is connected to an armrest frame located on the upper part of the seat frame, the front section of the frame is movably connected to a pedal assembly, a folding adjustment mechanism is connected between the frame, the main beam and the seat frame, the folding adjustment mechanism comprises a cross beam vertical plate, a seat frame vertical plate and a connecting cross beam, the cross beam vertical plate and the seat frame vertical plate are each provided with two groups, the cross beam vertical plate is connected to the two ends of the front cross beam and extends upward, the seat frame vertical plate is connected to the two sides of the seat frame and extends downward, the intersection end of the cross beam vertical plate and the seat frame vertical plate is hinged, the connecting cross beam is connected between the two cross beam vertical plates, and an electric push rod with both ends hinged is provided between the lower end of the connecting cross beam and the upper end of the rear cross beam. The front end of the frame is connected to a front wheelchair wheel, and the lower end of the main beam is connected to a rear electric drive wheel.

[0006] Preferably, the armrest frame is provided with two groups of armrest frames which are respectively connected to the left and right sides of the backrest frame and are hinged to the backrest frame through a connecting shaft. An electric controller is fixedly connected to the armrest frame on either side. An armrest folding box is hingedly provided at the bottom end of the armrest frame close to one end of the backrest frame. Armrest support rods are hingedly provided on the armrest folding boxes on both sides at one end away from the backrest frame and are hinged to the seat frame.

[0007] Preferably, the armrest folding box is buckled with the lower end of the armrest frame by means of a snap.

[0008] Preferably, the frame includes a front cross beam, a rear cross beam and a connecting rod, the connecting rod is provided with two groups and the two ends of the two groups of connecting rods are respectively hinged to the front cross beam and the rear cross beam, both ends of the rear cross beam are connected with rotating wheels, and the inner side wall of the main beam is matched with a T-shaped groove for rotation.

[0009] Preferably, the pedal assembly includes a foot pedal and a foot pedal frame, the foot pedal is connected to the foot pedal frame, and one end of the foot pedal frame extends upward to have two connecting pipes which are respectively hinged to the lower side walls of the front cross beam.

[0010] Preferably, a connecting piece is extended downwardly from the lower side wall of the front cross beam, the connecting piece is hinged to the connecting pipe, and the end of the connecting pipe extends and is arranged to abut against a side of the front cross beam facing the rear cross beam.

[0011] Preferably, front wheel axles are provided at both ends of the outer side of the front cross beam, the front wheelchair wheels are movably connected to the front wheel axles, the lower end of the main beam is connected to a connecting block, the rear electric drive wheel is connected to the outside of the connecting block, a drive motor is connected to the connecting block to match the rear electric drive wheel, an anti-roll tube is connected to the end of the connecting block, and an auxiliary wheel is connected to the end of the anti-roll tube.

[0012] Preferably, the upper end of the main beam is hinged to the intersection ends of the cross beam vertical plate and the seat frame vertical plate.

[0013] The advantages of the utility model compared with the prior art are:

[0014] In the utility model, the wheelchair is divided into a frame structure including a frame, a seat frame, a footrest assembly and a main beam, and each interconnected structure is movably connected. At the same time, multiple structures are driven by electric push rods to drive folding adjustment mechanisms and other components to ensure linked folding, thereby greatly increasing the folding effect of the utility model in actual application. In the utility model, the electric push rod is set between the folding adjustment mechanism and the frame structure to complete the folding assistance through electric drive, reducing the burden of manual adjustment. The folded wheelchair body can be conveniently moved vertically and carried through auxiliary wheels, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a structural schematic diagram of an electric folding wheelchair.

[0016] Figure 2 The utility model is a structural schematic diagram of an electric folding wheelchair in a bottom view.

[0017] Figure 3 The utility model is a structural schematic diagram of a top view of an electric folding wheelchair.

[0018] Figure 4 The invention is a structural schematic diagram of a cross-section of an electric folding wheelchair.

[0019] Figure 5 It is a schematic diagram of the connection structure between the main beam and the rear cross beam.

[0020] Figure 6 The utility model is a structural schematic diagram of a front view of an electric folding wheelchair.

[0021] As shown in the figure: 1. seat frame, 2. backrest frame, 3. main beam, 4. armrest frame, 5. front wheelchair wheel, 6. rear electric drive wheel, 7. connecting shaft, 8. electric controller, 9. armrest folding box, 10. armrest support rod, 11. buckle, 12. front cross beam, 13. rear cross beam, 14. connecting rod, 15. rotating wheel, 16. T-shaped groove, 17. foot pedal, 18. foot pedal frame, 19. connecting plate, 20. connecting pipe, 21. front wheel axle, 22. connecting block, 23. drive motor, 24. anti-roll tube, 25. auxiliary wheel, 26. cross beam vertical plate, 27. connecting cross beam, 28. seat frame vertical plate, 29. electric push rod. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0023] References to embodiments of the present invention will now be provided in detail, one or more examples of which are described below. Each example is provided as an explanation rather than a limitation of the present invention. In fact, it will be apparent to those skilled in the art that a variety of modifications and variations may be made to the present invention without departing from the scope or spirit of the present invention. For example, a feature illustrated or described as part of one embodiment may be used in another embodiment to produce a further embodiment.

[0024] Therefore, it is intended that the present invention covers such modifications and variations that fall within the scope of the appended claims and their equivalents. Other objects, features, and aspects of the present invention are disclosed in or are apparent from the following detailed description. Those of ordinary skill in the art will appreciate that this discussion is only a description of exemplary embodiments and is not intended to limit the broader aspects of the present invention.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] Combined with Figure 1-6As shown, an electric folding wheelchair comprises a frame and a seat frame 1, one end of the frame is also movably connected to a backrest frame 2, the outer side of the frame is movably connected to a main beam 3, the seat frame 1 is movably connected to the backrest frame 2, in this embodiment, the seat frame (1) is hingedly connected to the backrest frame (2), the backrest frame 2 is connected to an armrest frame 4 located at the upper part of the seat frame 1, the front end of the frame is movably connected to a pedal assembly, a folding adjustment mechanism is connected between the frame, the main beam 3 and the seat frame 1, the front end of the frame is connected to a front wheelchair wheel 5, the lower end of the main beam 3 is connected to a rear electric drive wheel 6, for The front and rear wheels are arranged in such a way that both ends of the outer side of the front cross beam 12 are provided with front wheel axles 21, the front wheelchair wheels 5 are movably connected to the front wheel axles 21, the lower end of the main beam 3 is connected with a connecting block 22, the rear electric drive wheel 6 is connected to the outer side of the connecting block 22, the connecting block 22 is connected with a driving motor 23 matching the rear electric drive wheel 6, the end of the connecting block 22 is connected with an anti-roll tube 24, the end of the anti-roll tube 24 is connected with an auxiliary wheel 25, and through the cooperation of the anti-roll tube 24 and the auxiliary wheel 25, after folding, it can cooperate with the rear electric drive wheel 6 for auxiliary support to prevent tipping.

[0027] In order to coordinate the above-mentioned components, the folding adjustment mechanism includes a crossbeam vertical plate 26, a seat frame vertical plate 28 and a connecting crossbeam 27. The crossbeam vertical plate 26 and the seat frame vertical plate 28 are each provided with two groups. The crossbeam vertical plate 26 is connected to the two ends of the front crossbeam 12 and extends upward. The seat frame vertical plate 28 is connected to the two sides of the seat frame 1 and extends downward. The intersection ends of the crossbeam vertical plate 26 and the seat frame vertical plate 28 are hinged. The connecting crossbeam 27 is connected between the two crossbeam vertical plates 26. An electric push rod with both ends hinged is provided between the lower end of the connecting crossbeam 27 and the upper end of the rear crossbeam 13. 29, the upper end of the main beam 3 is hinged with the intersection of the cross beam vertical plate 26 and the seat frame vertical plate 28, wherein the setting of the electric push rod 29 can control the relative distance between the connecting cross beam 27 and the rear cross beam 13, thereby controlling the movement of the cross beam vertical plate 26 and the seat frame vertical plate 28 through the connected hinged structure, driving the seat frame 3 and the front cross beam 12 and other structures to move, and at the same time, the backrest frame cooperates with the rear cross beam to complete the folding of the backrest frame, and the rotating wheel 15 slides in the T-shaped groove 16, and the footrest assembly is folded through the connecting tube 20 and the connecting plate 19, and the front wheelchair wheel is rotated to complete the folding use of the wheelchair.

[0028] Regarding the folding structure of the armrest frame, the armrest frame 4 is provided with two groups of armrest frames 4 respectively connected to the left and right sides of the backrest frame 2 and hingedly arranged with the backrest frame 2 through a connecting shaft 7. An electric controller 8 is fixedly connected to the armrest frame 4 on either side. The bottom ends of the two armrest frames (4) are hingedly provided with armrest hand rests (9) close to the backrest frame (2). The ends of the armrest hand rests (9) on both sides are hingedly connected to the seat frame (1) away from the backrest frame (2). Both sides of the armrest hand rests (9) are provided with armrest support rods (10). The armrest folding box 9 is buckled with the lower end of the armrest frame 4 through a buckle 11. The armrest folding box 9 and the armrest support rod 10 cooperate to support the normal use of the armrest frame 4, and the buckle 11 can control the hinged locking state of the contact armrest folding box 9, thereby completing the folding of the armrest frame 4.

[0029] The foldable structure design of the frame is specifically as follows: the frame includes a front crossbeam 12, a rear crossbeam 13 and a connecting rod 14, the connecting rod 14 is provided with two groups and the two ends of the two groups of connecting rods 14 are respectively hinged with the front crossbeam 12 and the rear crossbeam 13, the two ends of the rear crossbeam 13 are connected with a rotating wheel 15, the inner side wall of the main beam 3 is matched with a T-shaped groove 16 for rotation, the pedal assembly includes a pedal 17 and a pedal frame 18, the pedal 17 is connected to the pedal frame 18, one end of the pedal frame 18 Two connecting tubes 20 are extended upward and are hinged to the lower side walls of the front beam 12 respectively. A connecting piece 19 is extended downward from the lower side wall of the front beam 12. The connecting piece 19 is hinged to the connecting tube 20. The end of the connecting tube 20 is extended to abut against the side of the front beam 12 facing the rear beam 13. The extension of the end of the connecting tube 20 to abut against the side of the front beam 12 facing the rear beam 13 can limit the extreme position of the foot pedal assembly during normal use, thereby ensuring the stability of the foot pedal during normal use.

[0030] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0031] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An electric folding wheelchair, characterized in that: The invention comprises a frame and a seat frame (1), wherein one end of the frame is movably connected to a backrest frame (2), the outer side of the frame is movably connected to a main beam (3), the seat frame (1) is hingedly connected to the backrest frame (2), an armrest frame (4) is connected to the backrest frame (2) and located on the upper part of the seat frame (1), a folding adjustment mechanism is connected between the frame, the main beam (3) and the seat frame (1), the folding adjustment mechanism comprises a cross beam vertical plate (26), a seat frame vertical plate (28) and a connecting cross beam (27), the cross beam vertical plate (26) and the seat frame vertical plate (28) are each provided with two groups, the cross beam vertical plate (26) is connected with a The front cross beam (12) is extended upwardly at both ends, and the seat frame vertical plates (28) are connected to the two sides of the seat frame (1) and extend downwardly. The intersection ends of the cross beam vertical plates (26) and the seat frame vertical plates (28) are hingedly arranged. The connecting cross beam (27) is connected between the two cross beam vertical plates (26). An electric push rod (29) with both ends hingedly arranged is arranged between the lower end of the connecting cross beam (27) and the upper end of the rear cross beam (13). The folding adjustment mechanism is electrically driven. The front wheelchair wheel (5) is connected to the front end of the frame, and the lower end of the main beam (3) is connected to the rear electric drive wheel (6).

2. The electric folding wheelchair according to claim 1, characterized in that: The upper end of the main beam (3) is hingedly connected to the intersection ends of the cross beam vertical plate (26) and the seat frame vertical plate (28).

3. The electric folding wheelchair according to claim 2, characterized in that: The frame comprises a front crossbeam (12), a rear crossbeam (13) and a connecting rod (14); the connecting rod (14) is provided with two groups, and the two ends of the two groups of connecting rods (14) are respectively hinged to the front crossbeam (12) and the rear crossbeam (13); both ends of the rear crossbeam (13) are connected with rotating wheels (15); and the inner side wall of the main beam (3) is matched and rotated with a T-shaped groove (16).

4. The electric folding wheelchair according to claim 1, characterized in that: The armrest frame (4) is provided with two groups respectively connected to the left and right sides of the backrest frame (2) and hingedly arranged with the backrest frame (2) through a connecting shaft (7); an electric controller (8) is fixedly connected to the armrest frame (4) on either side; an armrest hand rest (9) is hingedly arranged at one end of the bottom end of the two armrest frames (4) close to the backrest frame (2); and an armrest support rod (10) is hingedly arranged at one end of the armrest hand rest (9) away from the backrest frame (2) and mutually hingedly arranged with the seat frame (1).

5. The electric folding wheelchair according to claim 4, characterized in that: A connecting piece (19) is extended downwardly from the lower side wall of the front cross beam (12), the connecting piece (19) is hinged to a connecting pipe (20), and the end of the connecting pipe (20) is extended to abut against a surface of the front cross beam (12) facing the rear cross beam (13).

6. The electric folding wheelchair according to claim 5, characterized in that: Both ends of the outer side of the front cross beam (12) are provided with front wheel axles (21), the front wheelchair wheels (5) are movably connected to the front wheel axles (21), the lower end of the main beam (3) is connected with a connecting block (22), the rear electric drive wheel (6) is connected to the outer side of the connecting block (22), the connecting block (22) is matched with the rear electric drive wheel (6) and is connected with a driving motor (23), the end of the connecting block (22) is connected with an anti-dumping tube (24), and the end of the anti-dumping tube (24) is connected with an auxiliary wheel (25).

Images