A light-weight electric wheelchair with easy disassembly

Abstract

The application discloses a kind of easily disassembled lightweight electric wheelchair, including power base and load seat, power base includes two blocks below and mutually hinged lower support plate, two blocks above and mutually hinged upper support plate, the front end of each lower support plate is connected with footboard, the outer edge of two lower support plates is connected with the outer edge of corresponding upper support plate by connecting frame, and the front and rear ends of each connecting frame lower edge are respectively provided with universal wheel and drive wheel;Load seat includes two mutually hinged seat cushion support plates, two handrail supports respectively arranged on the outer edge of corresponding seat cushion support plate, two backrest support rods respectively arranged on the rear end of corresponding handrail support, and backrest support belt is connected between two backrest support rods;Two upper support plates are detachably connected by fixed connecting piece, and the outer edge of each seat cushion support plate is detachably connected with corresponding connecting frame by quick-release connecting piece.The application can realize quick and convenient disassembly and folding, and the portability of wheelchair is better.

Description

Technical Field

[0001] This invention relates to the field of electric wheelchair technology, and in particular to a lightweight electric wheelchair that is easy to disassemble. Background Technology

[0002] In the field of medical rehabilitation, wheelchairs are one of the most common rehabilitation devices. Electric wheelchairs are intelligent medical rehabilitation devices that are upgraded from traditional wheelchairs by adding components such as drive systems, intelligent control systems, and drive power supplies. They can perform a variety of movement functions such as forward movement, backward movement, turning, lying flat, and turning around on the spot. They are high-tech intelligent products that combine precision mechanical structure design, embedded software and hardware control, engineering mechanics and other fields.

[0003] However, most existing electric wheelchairs are quite heavy. Although many electric wheelchairs can be folded forward and backward for easy transport and storage, their more complex structure makes them even heavier. Furthermore, the inability to quickly and easily assemble and disassemble them makes them difficult to move and less portable. For example, when traveling by car, the weight of the wheelchair makes it more difficult to transport and store it in the trunk. Summary of the Invention

[0004] The purpose of this invention is to provide an easily detachable, lightweight electric wheelchair that can be quickly and conveniently assembled and disassembled, and can also be folded upwards for easier transport and storage, thus improving the wheelchair's portability.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] A detachable lightweight electric wheelchair includes a power base and a supporting seat. The power base includes two lower support plates that are hinged to each other at the bottom and two upper support plates that are hinged to each other at the top. The two lower support plates are hinged to each other via a lower hinge shaft, and the two upper support plates are hinged to each other via an upper hinge shaft. The upper hinge shaft and the lower hinge shaft are connected by a vertical connecting strip. Each lower support plate has a foot pedal connected to its front end via a forward-bending and downward-curving connecting strip. The side of each lower support plate away from the hinge is connected to the side of the corresponding upper support plate away from the hinge via a connecting frame. Each connecting frame has a caster wheel installed at its front end and a drive wheel installed at its rear end. Each connecting frame also has a drive motor installed at its rear end to drive the corresponding drive wheel.

[0007] The supporting seat includes two hinged seat cushion support plates, two armrest brackets respectively arranged upward from the side away from the hinge of the corresponding seat cushion support plate, and two backrest support rods respectively arranged at the rear end of the corresponding armrest brackets. Each seat cushion support plate is provided with a folding seat cushion at the top end, each armrest bracket is provided with an armrest at the top end, and a backrest support strap is connected between the two backrest support rods.

[0008] The two upper support plates are hinged together on one side and detachably connected by a fixing connector. After the two upper support plates are connected by the fixing connector, the two upper support plates cannot rotate relative to each other. The side of each seat support plate away from the hinge is detachably connected to the upper end of the corresponding connecting frame by a quick-release connector. The upper end of the lower support plate is equipped with a power battery for supplying power to the drive motor. The upper end of the lower support plate is provided with a main control shell. An integrated circuit board is provided inside the main control shell. Each drive motor is electrically connected to the integrated circuit board.

[0009] By adopting the above technical solution, when the electric wheelchair needs to be disassembled, the quick-release connector is released, and the connection between the seat cushion support plate and the connecting frame is disconnected. The support bracket can then remove the carrying seat from the power base. After rotating the two seat cushion support plates upward, the backrest support strap automatically bends and folds, thus folding the carrying seat. Alternatively, the fixed connector is released, and the fixed connection between the two upper support plates is disconnected, allowing the two upper support plates to rotate relative to each other. Pushing the two upper support plates upward and pulling the lower hinge axis upward via the vertical connecting strip simultaneously causes the two lower support plates to rotate upward, thus folding the power base. When needed, the upper and lower support plates are rotated to a horizontal position, and the seat cushion support plate is also rotated to a horizontal position. The carrying seat is then placed on the power base, and the two upper support plates are connected via the fixed connector to prevent relative rotation. The connecting frame is connected to the seat cushion support plate via the quick-release connector, thus assembling and securing the electric wheelchair.

[0010] A further feature of the present invention is that: a vertically arranged sliding sleeve is provided at the front end of the lower side of each connecting frame; a vertical sliding shaft is provided at the upper end of each universal wheel and is slidably connected to the corresponding sliding sleeve; a limit cap is provided at the upper end of each vertical sliding shaft through the corresponding sliding sleeve; and a shock-absorbing spring is sleeved on each vertical sliding shaft between the lower end of the corresponding sliding sleeve and the corresponding universal wheel.

[0011] Each connecting frame has a swing arm rotatably connected to its rear end. Each swing arm has a mounting plate at its free end. Each drive motor is mounted on its corresponding mounting plate. Each drive wheel is rotatably connected to its corresponding mounting plate. The power output shaft of each drive motor passes through its corresponding mounting plate and is connected to its corresponding drive wheel. Each mounting plate is rotatably connected to the upper end of its corresponding connecting frame with a shock absorber rod.

[0012] By adopting the above technical solution, when the swivel wheel encounters an obstacle, the shock-absorbing spring can play a role in buffering and shock absorption. When the drive wheel encounters an obstacle, the obstacle first pushes the drive wheel to rotate backward and upward, which in turn pushes the swing arm to rotate. The shock-absorbing rod rotates and adaptively extends and retracts to absorb shock, thus playing a role in avoiding and absorbing shock. The shock absorption effect of the drive wheel is better.

[0013] A further configuration of the present invention is as follows: the fixed connector and each quick-release connector include an electromagnetic lock electrically connected to the integrated circuit board and a lock hole sleeve that cooperates with the lock head of the electromagnetic lock. The electromagnetic lock of the fixed connector is installed at the lower end of one of the upper support plates near its hinge edge, and the lock hole sleeve of the fixed connector is disposed at the lower end of the other upper support plate near its hinge edge. The electromagnetic lock of each quick-release connector is installed at the upper end of the corresponding connecting frame, and the lock hole sleeve of each quick-release connector is disposed on the side of the corresponding seat cushion support plate away from its hinge.

[0014] A further feature of the present invention is that a control handle is provided at the upper end of one of the handrails, and the control handle is connected to a cable that is detachably connected to the main control housing.

[0015] A further feature of the present invention is that a notch is provided in the middle of the hinged edge of each upper support plate.

[0016] A further feature of the present invention is that each backrest support rod has a handle at its upper end facing inward.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Firstly, the electric wheelchair of the present invention is divided into two parts: a power base and a support seat. The two parts can be quickly disassembled and assembled, and both parts can be folded independently, making it easier to transport and store, and improving the portability of the wheelchair.

[0019] Secondly, the present invention reduces the swaying of the wheelchair when driving on roads with poor conditions by setting shock-absorbing structures at the universal wheels and drive wheels, thus improving the stability of the wheelchair. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the power base;

[0022] Figure 3 It is used to display the bottom structure of the power base;

[0023] Figure 4 This is a schematic diagram of the overall structure supporting the seat.

[0024] In the diagram: 1. Lower support plate; 11. Lower hinge shaft; 12. Connecting strip; 13. Foot pedal; 2. Upper support plate; 21. Upper hinge shaft; 22. Notch; 23. Vertical connecting strip; 3. Connecting frame; 31. Sliding sleeve; 32. Swing arm; 33. Mounting plate; 4. Casters; 41. Vertical sliding shaft; 42. Limit cap; 43. Shock-absorbing spring; 5. Drive wheel; 51. Drive motor; 52. Shock-absorbing rod; 6. Seat cushion support plate; 61. Folding seat cushion; 7. Armrest bracket; 71. Armrest; 72. Control handle; 73. Cable; 8. Backrest support rod; 81. Backrest support strap; 82. Handle; 91. Electromagnetic lock; 92. Lock hole sleeve; 10. Power battery; 101. Main control shell. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0027] Example, refer to Figure 1-4 A lightweight, easily detachable electric wheelchair includes a power base and a supporting seat. The power base includes two lower support plates 1 hinged together and two upper support plates 2 hinged together. The two lower support plates 1 are hinged together by a lower hinge shaft 11, and the two upper support plates 2 are hinged together by an upper hinge shaft 21. Each upper support plate 2 has a notch 22 in the middle of its hinged edge to facilitate gripping the upper hinge shaft 21. The upper hinge shaft 21 and the lower hinge shaft 11 are connected by two vertical connecting strips 23. Each lower support plate 1 has a footrest 13 connected to its front end by two forward and downward curved connecting strips 12. The side of each lower support plate 1 away from the hinge is connected to the side of the corresponding upper support plate 2 away from the hinge by a connecting bracket 3.

[0028] Each connecting frame 3 has a vertically oriented sliding sleeve 31 at its lower front end. Each sliding sleeve 31 has a universal wheel 4 installed at its lower end. Each universal wheel 4 has a vertical sliding shaft 41 slidably connected to the corresponding sliding sleeve 31 at its upper end. Each vertical sliding shaft 41 has a limit cap 42 extending out of the corresponding sliding sleeve 31 at its upper end. Each vertical sliding shaft 41 is fitted with a shock-absorbing spring 43 located between the lower end of the corresponding sliding sleeve 31 and the corresponding universal wheel 4. Each connecting frame 3 has a swing arm 32 rotatably connected to its lower rear end. Each swing arm 32 has a mounting plate 33 at its free end. Each mounting plate 33 has a drive wheel 5 rotatably connected to its outer side. Each mounting plate 33 has a drive motor 51 installed on its inner side to drive the corresponding drive wheel 5. The power output shaft of each drive motor 51 passes through the corresponding mounting plate 33 and connects to the corresponding drive wheel 5. Each mounting plate 33 is rotatably connected to the upper end of the corresponding connecting frame 3 with a shock-absorbing rod 52.

[0029] The supporting seat includes two hinged seat cushion support plates 6, two armrest brackets 7 respectively arranged upward from the side away from the hinge of the corresponding seat cushion support plate 6, and two backrest support rods 8 respectively arranged at the rear end of the corresponding armrest brackets 7. Each seat cushion support plate 6 has a folding seat cushion 61 at its upper end, each armrest bracket 7 has an armrest 71 at its upper end, and a backrest support strap 81 is connected between the two backrest support rods 8. Each backrest support rod 8 has a handle 82 arranged inward at its upper end.

[0030] Two upper support plates 2 are hinged together on one side and detachably connected by two fixed connectors. After the two upper support plates 2 are connected by the fixed connectors, the two upper support plates 2 cannot rotate relative to each other. The side of each seat cushion support plate 6 away from the hinge is detachably connected to the upper end of the corresponding connecting frame 3 by two quick-release connectors. Each fixed connector and each quick-release connector includes an electromagnetic lock 91 and a lock hole sleeve 92 that mates with the lock head of the electromagnetic lock 91. The electromagnetic lock 91 of the fixed connector is installed at the lower end of one upper support plate 2 near its hinge side, and the lock hole sleeve 92 of the fixed connector is located at the lower end of the other upper support plate 2 near its hinge side. The electromagnetic lock 91 of each quick-release connector is installed at the upper end of the corresponding connecting frame 3, and the lock hole sleeve 92 of each quick-release connector is located on the side of the corresponding seat cushion support plate 6 away from its hinge.

[0031] Each lower support plate 1 has a power battery 10 installed at its upper end to supply power to the drive motor 51. A main control shell 101 is provided at the upper end of the lower support plate 1. An integrated circuit board (not shown) is provided inside the main control shell 101. Each drive motor 51 and each electromagnetic lock 91 are electrically connected to the integrated circuit board. A control handle 72 is provided at the upper end of one of the handrails 71. The control handle 72 is connected to a cable 73 that is detachably connected to the main control shell 101. The control handle 72 is electrically connected to the integrated circuit board through the cable 73.

[0032] Instructions for use: When the electric wheelchair needs to be disassembled, control the lever 72 to retract all the locks of the electromagnetic locks 91, releasing the fixed connection between the two upper support plates 2, allowing them to rotate relative to each other. Simultaneously, release the connection between the seat cushion support plate 6 and the connecting frame 3, allowing the support bracket to remove the carrying seat from the power base. After rotating the two seat cushion support plates 6 upwards, the backrest support strap 81 automatically bends and folds, thus folding the carrying seat. Then, grasp the upper hinge shaft 21 at the notch 22 and lift it upwards to rotate the two upper support plates 2 upwards. The upper support plate 2 and the lower support plate 11 are moved upward by the vertical connecting bar 23, which simultaneously rotates the two lower support plates 1 upward, thus folding the power base. When needed, the upper support plate 2 and the lower support plate 1 are rotated to the horizontal, and the seat support plate 6 is rotated to the horizontal. The carrying seat is placed on the power base, and the lock heads of all electromagnetic locks 91 are extended into the lock hole sleeves 92 by the control handle 72, so that the upper support plate 2 cannot rotate relative to the upper support plate 2. The connecting frame 3 is connected to the seat support plate 6 through the quick-release connector, thus realizing the assembly and fixation of the electric wheelchair.

[0033] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A lightweight, easily detachable electric wheelchair, comprising a power base and a support seat, characterized in that: The power base includes two lower support plates (1) that are hinged to each other at the bottom and two upper support plates (2) that are hinged to each other at the top. The two lower support plates (1) are hinged to each other by a lower hinge shaft (11) and the two upper support plates (2) are hinged to each other by an upper hinge shaft (21). The upper hinge shaft (21) and the lower hinge shaft (11) are connected by a vertical connecting strip (23). The front end of each lower support plate (1) is connected to a foot pedal (13) by a connecting strip (12) that bends forward and downward. The side of each lower support plate (1) away from the hinge is connected to the side of the corresponding upper support plate (2) away from the hinge by a connecting frame (3). The front end of each connecting frame (3) is equipped with a caster wheel (4). The rear end of each connecting frame (3) is equipped with a drive wheel (5). The rear end of each connecting frame (3) is equipped with a drive motor (51) for driving the corresponding drive wheel (5) to rotate. Each connecting frame (3) has a vertically arranged sliding sleeve (31) at its lower front end, and each universal wheel (4) has a vertical sliding shaft (41) that is slidably connected to the corresponding sliding sleeve (31) at its upper end. Each vertical sliding shaft (41) has a limit cap (42) that extends out of the corresponding sliding sleeve (31) at its upper end, and each vertical sliding shaft (41) has a shock-absorbing spring (43) located between the lower end of the corresponding sliding sleeve (31) and the corresponding universal wheel (4). Each connecting frame (3) has a swing arm (32) rotatably connected to its rear end. Each swing arm (32) has a mounting plate (33) at its free end. Each drive motor (51) is mounted on the corresponding mounting plate (33). Each drive wheel (5) is rotatably connected to the corresponding mounting plate (33). The power output shaft of each drive motor (51) passes through the corresponding mounting plate (33) and is connected to the corresponding drive wheel (5). Each mounting plate (33) is rotatably connected to the upper end of the corresponding connecting frame (3). The supporting seat includes two hinged seat cushion support plates (6), two armrest brackets (7) respectively arranged upward from the side away from the hinge of the corresponding seat cushion support plate (6), and two backrest support rods (8) respectively arranged at the rear end of the corresponding armrest brackets (7). Each seat cushion support plate (6) is provided with a folding seat cushion (61) at the upper end, and each armrest bracket (7) is provided with an armrest (71) at the upper end. A backrest support strap (81) is connected between the two backrest support rods (8). Two upper support plates (2) are hinged together on one side and detachably connected by a fixed connector. After the two upper support plates (2) are connected by the fixed connector, the two upper support plates (2) cannot rotate relative to each other. The side of each cushion support plate (6) away from the hinge is detachably connected to the upper end of the corresponding connecting frame (3) by a quick-release connector. The fixed connector and each quick-release connector include an electromagnetic lock (91) electrically connected to the integrated circuit board and a lock hole sleeve (92) that cooperates with the lock head of the electromagnetic lock (91). The electromagnetic lock (91) of the fixed connector is installed at the lower end of one of the upper support plates (2) near its hinge side. The locking hole sleeve (92) of the fixed connector is located at the lower end of another upper support plate (2) near its hinge side. The electromagnetic lock (91) of each quick-release connector is installed on the upper end of the corresponding connecting frame (3). The locking hole sleeve (92) of each quick-release connector is located on the side of the corresponding seat support plate (6) away from its hinge. The upper end of the lower support plate (1) is equipped with a power battery (10) for supplying power to the drive motor (51). The upper end of the lower support plate (1) is provided with a main control shell (101). An integrated circuit board is provided inside the main control shell (101). Each drive motor (51) is electrically connected to the integrated circuit board.

2. The easily detachable lightweight electric wheelchair according to claim 1, characterized in that: One of the handrails (71) has a control handle (72) at its upper end, and the control handle (72) is connected to a cable (73) that is detachably connected to the main control housing (101).

3. The easily detachable lightweight electric wheelchair according to claim 1, characterized in that: Each upper support plate (2) has a notch (22) in the middle of its hinged edge.

4. The easily detachable lightweight electric wheelchair according to claim 1, characterized in that: Each backrest support rod (8) has a handle (82) at the top.

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