Foldable electric wheelchair with anti-toppling device

Abstract

The foldable electric wheelchair comprises cushion cloth, backrest cloth is fixedly connected to the top of the cushion cloth, supporting frames are fixedly connected to the two sides of the cushion cloth, handle frames are fixedly connected to the two sides of the backrest cloth, and the handle frames are fixedly connected with the supporting frames. The anti-toppling wheelchair has the beneficial effects that by arranging the supporting plate, the outer support and the auxiliary anti-toppling wheels, all the auxiliary anti-toppling wheels in the outer support conduct anti-toppling supporting on the outer side of the movable rear wheel when the movable rear wheel moves, when the wheelchair topples, all the auxiliary anti-toppling wheels on the inner side of the outer support support the wheelchair, and therefore the anti-toppling wheelchair is convenient to use. The stability of the wheelchair in use is improved, by arranging the supporting rods and the inner mounting blocks, the supporting stability between the two supporting frames is guaranteed by fixing the positions of the two supporting rods, and the supporting stability of the wheelchair is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric wheelchairs, in particular to a foldable electric wheelchair provided with an anti-dumping device. Background Art

[0002] The electric wheelchair is a high-tech product that is modified and upgraded on the basis of the traditional manual wheelchair. It is superimposed with high-performance power drive devices, intelligent control devices, batteries and other components, which make the wheelchair have more intelligent functions. The electric wheelchair is suitable for people with limited mobility who have clear consciousness and normal cognitive ability, such as the elderly and the disabled. It is suitable for short-distance travel in relatively closed environments such as parks, indoors, and courtyards. However, when the existing electric wheelchair is in use, it is easy to cause tipping and rollover when the electric wheelchair moves on a slope, which is easy to cause injuries to people in the electric wheelchair. In addition, the existing electric wheelchair is not convenient to store and fold, and it takes up a large space when not in use and when transporting, which is not convenient. Summary of the invention

[0003] The object of the present invention is to provide a foldable electric wheelchair provided with an anti-tipping device, so as to solve the problems mentioned in the above background technology that the existing electric wheelchairs are prone to tipping or overturning when moving on a slope during use, which may easily cause injuries to people on the electric wheelchair, and the existing electric wheelchairs are not convenient to store and fold, and occupy a large space when not in use or when transporting, which is inconvenient.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a foldable electric wheelchair provided with an anti-dumping device, comprising a seat cushion cloth, a backrest cloth fixedly connected to the top of the seat cushion cloth, both sides of the seat cushion cloth are fixedly connected to a support frame, both sides of the backrest cloth are fixedly connected to a handle frame, the handle frame is fixedly connected to the support frame, a guide front wheel is installed on the outer side of the support frame, a movable rear wheel is rotatably arranged on the outer side of the support frame, a fixed side frame is fixedly connected to the outer side of the support frame, a fixed side plate is fixedly connected to the outer side of the fixed side frame, a connecting bottom plate is symmetrically fixedly connected to the bottom of the connecting bottom plate, a support plate is fixedly connected to the outer side of the support plate, an outer bracket is symmetrically fixedly connected to the outer side of the support plate, an auxiliary anti-dumping wheel is equidistantly rotatably arranged between the two outer brackets, an inner mounting plate is fixedly connected to the inner side of the support frame, an inner mounting groove is provided on the inner side of the inner mounting plate, a support rod is installed between the inner mounting plates, and the two support rods are rotatably connected through a rotating shaft.

[0005] As a preferred solution of the present invention: a connecting side box is fixedly connected to the inner side of the support frame, the movable rear wheel is rotatably connected to the connecting side box, a mounting frame is fixedly connected to one side of the connecting side box, a motor is installed on the top of the mounting frame, the interior of the connecting side box is rotatably connected to a No. 1 bevel gear, the output end of the motor is fixedly connected to the motor, the outer side of the movable rear wheel is fixedly connected to a No. 2 bevel gear, and the No. 2 bevel gear is meshingly connected to the No. 1 bevel gear.

[0006] As a preferred solution of the present invention: a connecting frame is fixedly connected to one side of the support frame, a reinforcing rod is fixedly connected to one side of the connecting frame, one end of the reinforcing rod is fixedly connected to the support frame, and a foot pedal is rotatably provided on the inner side of the connecting frame.

[0007] As a preferred solution of the present invention: both ends of the support rod are fixedly connected with inner mounting blocks that match the inner mounting grooves, and the inner mounting blocks are mounted to the inner mounting plate by bolts.

[0008] As a preferred solution of the present invention: a mounting frame is provided on one side of the support rod, four fixing screws are symmetrically fixedly connected to one side of the mounting frame, through holes cooperating with the fixing screws are symmetrically opened inside the support rod, and the outer side of the fixing screw is threadedly connected with a limiting nut.

[0009] As a preferred solution of the present invention: a No. 2 reinforcement frame is fixedly connected to one side of the handle frame, a No. 1 reinforcement frame is fixedly connected to the bottom of the No. 2 reinforcement frame, and a No. 1 reinforcement frame is fixedly connected to the mounting frame at the bottom.

[0010] As a preferred solution of the present invention: a handrail is fixedly connected to the top of the support frame.

[0011] As a preferred solution of the present invention: a connecting plate is fixedly connected to one side of the fixed side plate, and a controller is installed on the top of the connecting plate.

[0012] As a preferred solution of the present invention: a battery is installed on the top of the fixed side plate.

[0013] As a preferred solution of the present invention: the motor and the battery are both electrically connected to the controller.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a support plate, an outer bracket and auxiliary anti-reverse wheels, so that each auxiliary anti-reverse wheel in the outer bracket can support the outer side of the moving rear wheel to prevent it from falling over when the wheelchair moves. When the wheelchair topples over, the wheelchair is supported by each auxiliary anti-reverse wheel on the inner side of the outer bracket, thereby improving the stability of the wheelchair when in use. By providing a support rod and an inner mounting block, the support stability between the two support frames is guaranteed by fixing the positions of the two support rods, thereby improving the stability of the wheelchair support. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 It is a bottom view of the present invention;

[0017] Figure 3 It is a left side view of the present invention;

[0018] Figure 4 A top view of the present invention;

[0019] Figure 5 This is a schematic diagram of the installation structure of the installation frame of the present invention;

[0020] Figure 6 This is a rear view of the installation frame of the present invention;

[0021] Figure 7 It is a schematic diagram of the internal structure of the connecting side box of the present invention.

[0022] In the figure: 1. Seat cushion cloth; 2. Backrest cloth; 3. Support frame; 4. Armrest; 5. Handle frame; 6. Fixed side frame; 7. Fixed side plate; 8. Connecting bottom plate; 9. Support plate; 10. External bracket; 11. Auxiliary anti-reverse wheel; 12. Moving rear wheel; 13. Connecting frame; 14. Reinforcement rod; 15. Guide front wheel; 16. Foot pedal; 17. Connecting side box; 18. Inner mounting plate; 19. Inner mounting groove; 20. Inner mounting block; 21. Support rod; 22. Motor; 23. No. 1 bevel gear; 24. No. 2 bevel gear; 25. Rotating shaft; 26. Mounting frame; 27. Fixed screw; 28. Perforation; 29. ​​Limit nut; 30. Connecting plate; 31. Controller; 32. Battery; 33. Mounting frame; 34. No. 1 reinforcement frame; 35. No. 2 reinforcement frame. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figures 1 to 7 The present invention provides a technical solution: a foldable electric wheelchair with an anti-dumping device, comprising a seat cushion cloth 1, a backrest cloth 2 fixedly connected to the top of the seat cushion cloth 1, support frames 3 fixedly connected to both sides of the seat cushion cloth 1, handle frames 5 fixedly connected to both sides of the backrest cloth 2, the handle frames 5 fixedly connected to the support frames 3, a guide front wheel 15 installed on the outer side of the support frame 3, a movable rear wheel 12 rotatably arranged on the outer side of the support frame 3, a fixed side frame 6 fixedly connected to the outer side of the support frame 3, a fixed side plate 7 fixedly connected to the outer side of the fixed side frame 6, a connecting bottom plate 8 symmetrically fixedly connected to the bottom of the connecting bottom plate 8, a supporting plate 9 fixedly connected to the outer side of the support plate 9 The outer brackets 10 are symmetrically fixedly connected, and auxiliary anti-reverse wheels 11 are equidistantly rotatably arranged between the two outer brackets 10. An inner mounting plate 18 is fixedly connected to the inner side of the support frame 3, and an inner mounting groove 19 is provided on the inner side of the inner mounting plate 18. Support rods 21 are installed between the inner mounting plates 18, and the two support rods 21 are rotatably connected via a rotating shaft 25. When the wheelchair is moved by moving the rear wheels 12, the auxiliary anti-reverse wheels 11 in the outer brackets 10 outside the moving rear wheels 12 perform anti-tipping protection for the wheelchair. When the wheelchair tilts, the auxiliary anti-reverse wheels 11 on the inner side of the outer brackets 10 provide support to prevent the wheelchair from tipping over, thereby improving the safety of the wheelchair when in use.

[0025] Among them, the inner side of the support frame 3 is fixedly connected with a connecting side box 17, the mobile rear wheel 12 is rotatably connected to the connecting side box 17, one side of the connecting side box 17 is fixedly connected with a mounting frame 33, and a motor 22 is installed on the top of the mounting frame 33. The inner part of the connecting side box 17 is rotatably connected to a No. 1 bevel gear 23, and the output end of the motor 22 is fixedly connected to the motor 22, and the outer side of the mobile rear wheel 12 is fixedly connected with a No. 2 bevel gear 24, and the No. 2 bevel gear 24 is meshed with the No. 1 bevel gear 23. The No. 1 bevel gear 23 is driven to rotate by the output end of the motor 22. When the No. 1 bevel gear 23 rotates, it drives the meshed No. 2 bevel gear 24 to rotate. When the No. 2 bevel gear 24 rotates, it drives the mobile rear wheel 12 to rotate, and the wheelchair is driven to move and adjust by the mobile rear wheel 12. In the context of an electric wheelchair, the motor 22 is the core component that drives the wheelchair to move, and is responsible for converting electrical energy into mechanical energy, thereby driving the wheels of the wheelchair to rotate, and realizing forward and backward movements.

[0026] Among them, a connecting frame 13 is fixedly connected to one side of the support frame 3, a reinforcing rod 14 is fixedly connected to one side of the connecting frame 13, one end of the reinforcing rod 14 is fixedly connected to the support frame 3, and a foot pedal 16 is rotatably provided on the inner side of the connecting frame 13, and the foot pedal 16 is supported by the connecting frame 13. The supporting stability of the connecting frame 13 and the foot pedal 16 is guaranteed by the reinforcing rod 14 between the connecting frame 13 and the support frame 3, thereby improving the supporting stability.

[0027] Among them, both ends of the support rod 21 are fixedly connected with internal mounting blocks 20 that cooperate with the internal mounting groove 19. The internal mounting block 20 and the internal mounting plate 18 are installed by bolts. The internal mounting block 20 enters the internal mounting groove 19 for installation. The internal mounting block 20 and the internal mounting plate 18 are fixed by bolts, and the support frame 3 is supported by the support rod 21.

[0028] Among them, a mounting frame 26 is provided on one side of the support rod 21, and four fixing screws 27 are symmetrically fixedly connected to one side of the mounting frame 26. The inside of the support rod 21 is symmetrically provided with through holes 28 that cooperate with the fixing screws 27. The outer side of the fixing screws 27 is threadedly connected with a limiting nut 29. The fixing screw 27 on one side of the mounting frame 26 enters the through hole 28 for installation limitation, and the support rod 21 is tightened by the limiting nut 29, so as to fix the position of the support rod 21.

[0029] Among them, a No. 2 reinforcement frame 35 is fixedly connected to one side of the handle frame 5, the bottom of the No. 2 reinforcement frame 35 is fixedly connected to the No. 1 reinforcement frame 34, and the bottom of the No. 1 reinforcement frame 34 is fixedly connected to the mounting frame 33. The mounting frame 33 is reinforced by the No. 1 reinforcement frame 34 and the No. 2 reinforcement frame 35 to improve the stability of the motor 22.

[0030] Among them, the top of the support frame 3 is fixedly connected with an armrest 4 for the patient to hold on to.

[0031] Among them, a connecting plate 30 is fixedly connected to one side of the fixed side panel 7, and a controller 31 is installed on the top of the connecting plate 30. The device is centrally controlled by the controller 31 to improve stability. The electric wheelchair controller 31 is used to manage the motor, battery and control system to enable the user to control and move the wheelchair.

[0032] Among them, a battery 32 is installed on the top of the fixed side plate 7, and the electric wheelchair is powered by the battery 32. The battery 32 is an electrochemical device that stores chemical energy and releases electrical energy when necessary. It can store and release electrical energy through reversible chemical reactions. During the discharge process, the battery converts the stored chemical energy into electrical energy for external equipment; during the charging process, the electrical energy is converted into chemical energy and stored through an external power supply.

[0033] The motor 22 and the battery 32 are both electrically connected to the controller 31 .

[0034] Specifically, when in use, the output end of the motor 22 drives the first bevel gear 23 to rotate, and when the first bevel gear 23 rotates, it drives the meshing second bevel gear 24 to rotate, and when the second bevel gear 24 rotates, it drives the mobile rear wheel 12 to rotate, and the wheelchair is driven to move and adjust by the mobile rear wheel 12. The person using the wheelchair sits on the cushion cloth 1, and the backrest cloth 2 supports the back. The position between the two support frames 3 is supported by the support rod 21, the inner mounting block 20, the inner mounting plate 18 and the inner mounting groove 19. When it needs to be folded and stored, the limiting nut 29 is rotated outward, and the limiting nut 29 leaves the fixing screw 27, and the pushing of the support rod 21 is cancelled. At this time, the mounting frame 26 and the fixing screw 27 can be removed from the wearer. By removing it from the hole 28, the position limit of the support rod 21 connected to the rotating shaft 25 is cancelled, and the support rod 21 and the inner mounting block 20 can be slid and removed from the inner mounting groove 19 on the inner side of the inner mounting plate 18 by removing the bolts connecting the inner mounting block 20 and the inner mounting plate 18. The support rod 21 can be folded, and the two support frames 3 and the handle frame 5 can be folded and stored. The seat cushion cloth 1 and the backrest cloth 2 are folded, and the wheelchair is folded and stored. When the wheelchair is moved by moving the rear wheels 12, the auxiliary anti-reverse wheels 11 in the outer bracket 10 outside the moving rear wheels 12 perform anti-dumping protection for the wheelchair. When the wheelchair tilts, the auxiliary anti-reverse wheels 11 on the inner side of the outer bracket 10 provide support to prevent the wheelchair from tipping over.

[0035] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0037] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A foldable electric wheelchair provided with an anti-dumping device, characterized in that: The invention comprises a seat cushion cloth (1), the top of the seat cushion cloth (1) is fixedly connected to a backrest cloth (2), both sides of the seat cushion cloth (1) are fixedly connected to a support frame (3), both sides of the backrest cloth (2) are fixedly connected to a handle frame (5), the handle frame (5) is fixedly connected to the support frame (3), a guide front wheel (15) is installed on the outer side of the support frame (3), a movable rear wheel (12) is rotatably arranged on the outer side of the support frame (3), a fixed side frame (6) is fixedly connected to the outer side of the fixed side frame (6), a fixed side plate (7) is fixedly connected to the outer side of the fixed side frame (6), and the fixed The bottom of the side plate (7) is symmetrically fixedly connected to a connecting bottom plate (8), the bottom of the connecting bottom plate (8) is fixedly connected to a supporting plate (9), the outer side of the supporting plate (9) is symmetrically fixedly connected to an outer bracket (10), an auxiliary anti-reverse wheel (11) is equidistantly rotatably arranged between the two outer brackets (10), the inner side of the supporting frame (3) is fixedly connected to an inner mounting plate (18), the inner side of the inner mounting plate (18) is provided with an inner mounting groove (19), support rods (21) are installed between the inner mounting plates (18), and the two support rods (21) are rotatably connected via a rotating shaft (25).

2. A foldable electric wheelchair provided with an anti-dumping device according to claim 1, characterized in that: The inner side of the support frame (3) is fixedly connected to a connecting side box (17), the movable rear wheel (12) is rotatably connected to the connecting side box (17), one side of the connecting side box (17) is fixedly connected to a mounting frame (33), a motor (22) is mounted on the top of the mounting frame (33), the interior of the connecting side box (17) is rotatably connected to a first bevel gear (23), the output end of the motor (22) is fixedly connected to the motor (22), the outer side of the movable rear wheel (12) is fixedly connected to a second bevel gear (24), and the second bevel gear (24) is meshingly connected to the first bevel gear (23).

3. A foldable electric wheelchair provided with an anti-dumping device according to claim 2, characterized in that: A connecting frame (13) is fixedly connected to one side of the support frame (3), a reinforcing rod (14) is fixedly connected to one side of the connecting frame (13), one end of the reinforcing rod (14) is fixedly connected to the support frame (3), and a foot pedal (16) is rotatably provided on the inner side of the connecting frame (13).

4. A foldable electric wheelchair provided with an anti-dumping device according to claim 3, characterized in that: Both ends of the support rod (21) are fixedly connected with inner mounting blocks (20) that match the inner mounting groove (19), and the inner mounting block (20) is mounted on the inner mounting plate (18) by bolts.

5. A foldable electric wheelchair provided with an anti-dumping device according to claim 4, characterized in that: A mounting frame (26) is provided on one side of the support rod (21), and four fixing screws (27) are symmetrically fixedly connected to one side of the mounting frame (26). Through holes (28) cooperating with the fixing screws (27) are symmetrically opened inside the support rod (21), and the outer sides of the fixing screws (27) are threadedly connected to limit nuts (29).

6. A foldable electric wheelchair with an anti-dumping device according to claim 5, characterized in that: A second reinforcement frame (35) is fixedly connected to one side of the handle frame (5), a first reinforcement frame (34) is fixedly connected to the bottom of the second reinforcement frame (35), and a mounting frame (33) is fixedly connected to the bottom of the first reinforcement frame (34).

7. A foldable electric wheelchair provided with an anti-dumping device according to claim 6, characterized in that: A handrail (4) is fixedly connected to the top of the support frame (3).

8. A foldable electric wheelchair provided with an anti-dumping device according to claim 7, characterized in that: A connecting plate (30) is fixedly connected to one side of the fixed side plate (7), and a controller (31) is installed on the top of the connecting plate (30).

9. A foldable electric wheelchair provided with an anti-dumping device according to claim 8, characterized in that: A storage battery (32) is installed on the top of the fixed side plate (7).

10. A foldable electric wheelchair provided with an anti-dumping device according to claim 9, characterized in that: The motor (22) and the battery (32) are both electrically connected to the controller (31).

Images