Wheelchair

Abstract

A wheelchair, comprising a seat (10), a chassis (30) and a support arm (20). The seat (10) is connected to the chassis (30) by means of the support arm (20), and at least one of the seat (10) and the chassis (30) is mechanically and electrically connected to the support arm (20) in a detachable manner. The electrical connection between the seat (10) and the support arm (20) is a wired or wireless electrical connection, and the electrical connection between the chassis (30) and the support arm (20) is a wired or wireless electrical connection. Thus, the wheelchair can be structurally divided into at least two parts, and during the mechanical disassembly and assembly of the wheelchair, the electrical disassembly and assembly of the wheelchair can be simultaneously completed. Therefore, the space required for storing the wheelchair can be reduced, facilitating placement of the wheelchair into limited spaces such as a vehicle trunk and improving storage convenience, and complex wiring requirements of the multifunctional wheelchair can be met, avoiding line damage or entanglement during disassembly and assembly of the wheelchair, thereby ensuring the stability and safety of wheelchair functions.

Description

wheelchair Technical Field

[0001] This application relates to the field of mobility technology, and more particularly to a wheelchair. Background Technology

[0002] In existing wheelchair designs, foldable structures are commonly used to address the inconvenience of transporting wheelchairs and their large space-consuming nature when not in use. However, as wheelchairs incorporate more functions, such as intelligent driving features, the wiring becomes increasingly complex, making it difficult to store them using traditional folding methods. Furthermore, in overseas family settings, there are frequent travel needs, requiring solutions for wheelchair storage during outings, such as storing the wheelchair in a car (e.g., in the trunk).

[0003] Summary of the Invention

[0004] This application provides a wheelchair that reduces the space required for storage, making it easier to place in limited spaces such as vehicle trunks, thus improving storage convenience. It can also adapt to the complex wiring requirements of multifunctional wheelchairs, avoiding wire damage or tangling during wheelchair assembly and disassembly, ensuring the stability and safety of wheelchair functions, and enhancing the user's operating experience.

[0005] This application provides a wheelchair, which includes a seat, a chassis, and a support arm. The seat and the chassis are connected by the support arm, and at least one of the seat and the chassis is mechanically and electrically connected to the support arm in a detachable manner. Furthermore, the electrical connection between the seat and the support arm is a wired electrical connection or a radio connection, and the electrical connection between the chassis and the support arm is a wired electrical connection or a radio connection.

[0006] In some embodiments, the seat is provided with a seat connector, the seat connector including a first connector electrically connected to a connection circuit board of the seat; the support arm is provided with a first support arm connector, the first support arm connector including a second connector electrically connected to a connection circuit board of the support arm, and the seat and the support arm are wired electrically connected through the seat connector and the first support arm connector, and when the seat and the support arm are in a connected state, the first connector and the second connector are connected to realize the wired electrical connection between the seat and the support arm.

[0007] In some embodiments, the chassis is provided with a chassis connecting seat, the chassis connecting seat including a third connector electrically connected to the connecting circuit board of the chassis; the support arm is provided with a second support arm connecting seat, the second support arm connecting seat including a fourth connector electrically connected to the connecting circuit board of the support arm, and the chassis and the support arm are wired electrically connected through the chassis connecting seat and the second support arm connecting seat; and when the chassis and the support arm are in a connected state, the third connector and the fourth connector are connected to realize the wired electrical connection between the chassis and the support arm.

[0008] In some embodiments, the support arm includes a groove; the seat includes a push rod adapted to the groove, and the seat and the support arm are detachably connected via the groove and the push rod.

[0009] In some embodiments, the seat further includes a seat-side removal handle and a seat-side handle pivot, the seat-side removal handle being rotatably connected to the seat-side handle pivot, and the seat-side removal handle being configured to move the push rod when rotating about the seat-side handle pivot.

[0010] In some embodiments, the seat further includes a fixed shaft and a swing arm, the fixed shaft fixingly connecting the seat side removal handle to the swing arm, and the seat side removal handle is specifically configured such that when rotating about the pivot of the seat side handle, the swing arm drives the push rod to move.

[0011] In some embodiments, the seat includes a seat control board, and the seat control board is electrically connected to the seat's connection circuit board.

[0012] In some embodiments, the support arm includes a docking limiting portion; the chassis includes a locking tongue, the locking tongue being adapted to the docking limiting portion, and the chassis and the support arm are detachably connected via the locking tongue and the docking limiting portion, the locking tongue having a locked state and an unlocked state; and, when the support arm and the chassis are connected, the docking limiting portion is engaged in the locking tongue, and the locking tongue is in a locked state; when the support arm and the chassis are disassembled, the docking limiting portion is disengaged from the locking tongue.

[0013] In some embodiments, the chassis further includes a chassis-side mounting handle, the chassis-side mounting handle and the locking tongue are respectively located on opposite sides of the mounting position of the support arm, and the chassis-side mounting handle is configured to unlock the locking tongue when subjected to a force in a specified direction.

[0014] In some embodiments, the chassis further includes a transmission rod, a chassis side handle pivot, and a transmission component. The chassis side detachable handle is fixedly connected to the transmission rod, the transmission rod is rotatably connected to the chassis side handle pivot, the transmission rod is connected to the latch via the transmission component, and the chassis side detachable handle is specifically configured to: when subjected to a force in a specified direction, drive the transmission rod to rotate around the chassis side handle pivot, and during the rotation of the transmission rod around the chassis side handle pivot, drive the latch to unlock via the transmission component.

[0015] In some embodiments, the support arm further includes a docking pivot; the chassis further includes a positioning part adapted to the docking pivot, and the positioning part and the locking tongue are respectively located on opposite sides of the mounting position of the support arm; and when the support arm and the chassis are in a connected state, the docking pivot is positioned at the positioning part, and when the locking tongue changes from a locked state to an unlocked state, the support arm is subjected to a force in a specified direction and rotates around the docking pivot, and the docking limiting part disengages from the locking tongue, so that the support arm and the chassis change from a connected state to a disassembled state.

[0016] In some embodiments, the support arm includes a support arm control board, and the support arm control board is electrically connected to the connection circuit board of the support arm.

[0017] In some embodiments, the seat includes a seat body and a backrest, the backrest being detachably connected to the seat body.

[0018] In some embodiments, the seat body includes a connecting frame and a limiting rod, the limiting rod being connected to the connecting frame; the backrest includes a first limiting portion adapted to the limiting rod; and when the backrest and the seat body are in a connected state, the limiting rod is engaged in the first limiting portion, and when the backrest is subjected to a force in a direction away from the seat body, the limiting rod will disengage from the first limiting portion, so that the backrest and the seat body change from a connected state to a detached state.

[0019] In some embodiments, the seat body further includes a pivot shaft connected to the connecting frame; the backrest further includes a second limiting portion adapted to the pivot shaft; and when the backrest and the seat body are in a connected state, the pivot shaft is engaged in the second limiting portion, and when the backrest is subjected to a force in a direction away from the seat body, the backrest will rotate around the pivot shaft, and the limiting rod will disengage from the first limiting portion, so that the backrest and the seat body change from a connected state to a disassembled state.

[0020] In some embodiments, the first limiting portion is provided with a slot and has a first inclined surface and a second inclined surface, wherein the first inclined surface is configured to guide the limiting rod to be engaged in the slot, and the second inclined surface is configured to guide the limiting rod to disengage from the slot.

[0021] In some embodiments, the connecting frame is provided with a first mounting hole and a second mounting hole, and the opposite ends of the limiting rod are respectively installed in the first mounting hole and the second mounting hole, and the positions of the opposite ends of the limiting rod in the first mounting hole and the second mounting hole are adjustable, so as to realize that the limiting rod is locked in the first limiting part, or to realize that the limiting rod is disengaged from the first limiting part; the seat body also includes a spring, one end of the spring is fixed to the connecting frame, the other end of the spring is connected to the limiting rod, and the spring is configured to apply a force to the limiting rod to limit the disengagement of the limiting rod from the first limiting part.

[0022] In some embodiments, the chassis includes a front wheel module and a rear wheel module, the front wheel module and the rear wheel module being detachably connected.

[0023] In some embodiments, the front wheel module and the rear wheel module are electrically connected in a detachable manner, and the electrical connection between the front wheel module and the rear wheel module is a wired electrical connection or a wireless connection.

[0024] In some embodiments, the front wheel module includes a front wheel connector, the front wheel connector including a fifth connector electrically connected to a connection circuit board of the front wheel module; the rear wheel module includes a rear wheel connector, the rear wheel connector including a sixth connector electrically connected to a connection circuit board of the rear wheel module, and the front wheel module and the rear wheel module are wired electrically connected through the front wheel connector and the rear wheel connector; and when the front wheel module and the rear wheel module are in a connected state, the fifth connector and the sixth connector are connected to realize the wired electrical connection between the front wheel module and the rear wheel module.

[0025] In some embodiments, the front wheel module includes a frame; the rear wheel module includes a limiting swing arm adapted to the frame; and the front wheel module and the rear wheel module are detachably connected via the frame and the limiting swing arm.

[0026] In some embodiments, the rear wheel module further includes a module separation handle, which is fixedly connected to the limiting swing arm; and when the front wheel module and the rear wheel module are in a connected state, the frame and the limiting swing arm are connected together by a snap-fit, and the module separation handle is configured to: when subjected to a force in a specified direction, drive the frame to disengage from the limiting swing arm, so that the frame and the limiting swing arm change from a connected state to a disassembled state.

[0027] In some embodiments, the frame includes a front wheel side limiting rod; the rear wheel module further includes a rear wheel side limiting part, which is adapted to the front wheel side limiting rod; and when the front wheel module and the rear wheel module are in a connected state, the rear wheel side limiting part and the limiting swing arm together clamp and fix the front wheel side limiting rod.

[0028] In some embodiments, the rear wheel module further includes a battery compartment and a battery, the battery being detachably installed within the battery compartment.

[0029] In some embodiments, the battery compartment is configured such that, when the battery and the battery compartment are in a detached state, a user can pass through the battery compartment to operate the module separation handle.

[0030] In some embodiments, the battery compartment is provided with an unlocking device, the unlocking device including a limiting body; the battery is provided with a recessed portion, the recessed portion being adapted to the limiting body, and the battery and the battery compartment are detachably installed through the recessed portion and the limiting portion.

[0031] In some embodiments, the unlocking device further includes a button, an elastomer, and a linkage mechanism, wherein the button is disposed on the linkage mechanism, the linkage mechanism is connected to the limiting body, and the elastomer is connected to the linkage mechanism or the limiting body; and, when the battery and the battery compartment are in the installed state, the limiting part is engaged in the recessed part, and the button is configured such that: when pressed, the linkage mechanism drives the limiting body to disengage from the recessed part, so that the battery and the battery compartment change from the installed state to the disassembled state, and during the process of the limiting body disengaging from the recessed part, the elastomer is stretched.

[0032] In some embodiments, the end of the limiting body contacts the battery inside the battery compartment in a line contact or surface contact manner.

[0033] In some embodiments, the bottom of the battery compartment is provided with a resilient mounting base, and the resilient mounting base is configured to provide a force to the battery that causes the battery to detach from the battery compartment when the battery is installed in the battery compartment.

[0034] In some embodiments, the front wheel module includes a front wheel electronic control board, and the front wheel electronic control board is electrically connected to the connection circuit board of the front wheel module; the rear wheel module includes a rear wheel electronic control board, and the rear wheel electronic control board is electrically connected to the connection circuit board of the rear wheel module.

[0035] In some embodiments, the projection of the chassis along the top-bottom direction of the wheelchair is U-shaped.

[0036] The beneficial effects of this application are: the wheelchair in this embodiment adopts a design that facilitates disassembly and assembly, allowing users to more easily disassemble the wheelchair into smaller, more manageable parts, thereby greatly reducing the space required for storage. This provides great convenience for family users when traveling, especially when they need to put the wheelchair in limited spaces such as the trunk of a vehicle.

[0037] Furthermore, the wheelchair in this embodiment adopts a design that facilitates disassembly and assembly, allowing for easier management of the wheelchair's wiring during disassembly and assembly. This adapts to complex wiring requirements, avoids wiring damage or tangling caused by folding, and ensures the stability and safety of the wheelchair's functions.

[0038] In addition, compared to traditional folding wheelchairs, which may suffer structural wear due to frequent mechanical movements during long-term use and folding, the wheelchair in this embodiment adopts a design that facilitates disassembly and assembly, which can reduce such wear, avoid structural damage caused by long-term folding, and thus extend the service life of the wheelchair.

[0039] For families abroad, the convenient assembly and disassembly design significantly enhances their user experience. Whether preparing for a trip or reassembling the wheelchair after arrival, it's much easier and faster, reducing physical and time burdens and improving the overall user experience. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 is a schematic diagram of the structure of the wheelchair provided in an embodiment of this application.

[0042] Figures 2a and 2b are schematic diagrams of the structure after the seat cushion is removed from the seat according to the embodiments of this application.

[0043] Figures 3a and 3b are schematic diagrams of the connected seat body and backrest provided in the embodiments of this application.

[0044] Figure 4 is a schematic diagram of the operation of disassembling and assembling the seat body and backrest provided in the embodiment of this application.

[0045] Figure 5 is a schematic diagram of the support arm provided in an embodiment of this application.

[0046] Figure 6 is a circuit diagram of the wheelchair provided in an embodiment of this application.

[0047] Figures 7a to 7c are schematic diagrams of the structure of the seat connecting seat provided in the embodiments of this application.

[0048] Figures 8a to 8c are schematic diagrams of the structure of the first support arm connecting seat provided in the embodiments of this application.

[0049] Figure 9 is a structural schematic diagram of the connected seat connecting seat and support arm connecting seat provided in the embodiment of this application.

[0050] Figure 10 is a structural schematic diagram of the connected support arm and decorative panel provided in an embodiment of this application.

[0051] Figures 11a to 11c are schematic diagrams of the connected support arm and chassis provided in the embodiments of this application.

[0052] Figure 12 is a schematic diagram of the chassis structure provided in an embodiment of this application.

[0053] Figures 13a and 13b are schematic diagrams of the connected support arm and front wheel module provided in the embodiments of this application.

[0054] Figures 14a and 14b are schematic diagrams of the connected front wheel module and rear wheel module provided in the embodiments of this application.

[0055] Figure 15 is a circuit diagram of the chassis provided in an embodiment of this application.

[0056] Figure 16 is a schematic diagram of the battery installed in the battery compartment according to an embodiment of this application.

[0057] Figure 17 is a schematic diagram of the battery compartment provided in an embodiment of this application.

[0058] Figure 18 is a partial cross-sectional structural diagram of the battery compartment provided in an embodiment of this application.

[0059] Figure 19 is a partial structural schematic diagram of the rear wheel module provided in an embodiment of this application.

[0060] Figure 20 is a schematic diagram of another part of the structure of the rear wheel module provided in the embodiment of this application.

[0061] Explanation of reference numerals in the attached figures:

[0062] 10-Seat; 20-Support arm; 30-Chassis; 110-Seat body; 120-Seat cushion; 130-Backrest; 111-First connecting frame; 1111-Magnetic attachment; 112-Second connecting frame; 113-Limiting rod; 114-Rotating shaft; 115-Spring; 131-First limiting part; 132-Second limiting part; 131A-Slot; 131B-First inclined surface; 131C-Second inclined surface; 140 - Seat connector; 141 - First connector; 142 - Positioning post; 11 - Push rod; 12 - Seat side removal handle; 13 - Seat side handle pivot; 14 - Fixed shaft; 15 - Swing arm; 210 - First support arm connector; 220 - Second support arm connector; 211 - Second connector; 212 - Positioning hole; 213 - Spring; 215 - First mounting base; 216 - Screw; 21 - Groove ; 22-Reinforcing plate; 23-Matching limit part; 24-Matching pivot; 301-Chassis connecting seat; 31-Lock tongue; 32-Chassis side disassembly handle; 33-Passing rod; 34-Chassis side handle pivot; 35-Passing component; 36-Positioning part; 40-Decorative panel; 310-Front wheel module; 311-Frame; 3111-Front wheel side limit rod; 312-Front wheel connecting seat; 320-Rear wheel module; 321-Limit 322-Modular release handle; 323-Rear wheel side limiter; 324-Battery compartment; 324A-Unlocking device; 3241-Limiter body; 3242-Button; 3243-Elastic body; 3244-Linkage mechanism; 325-Battery; 3251-Recess; 326-Elastic mounting base; 327-Rear wheel connecting base; 328-Anti-roll wheel bracket; 3281-Mounting bracket; 3282-Anti-roll wheel. Detailed Implementation

[0063] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0064] In the following description of this application, "some embodiments" are referred to, which describe a subset of all possible embodiments. However, it is understood that "some embodiments" may be the same subset or different subset of all possible embodiments, and may be combined with each other without conflict.

[0065] In the following description of this application, the terms "first, second, third" are used only to distinguish similar objects and do not represent a specific order of objects. It is understood that "first, second, third" may be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0067] Please refer to Figure 1, which is a structural schematic diagram of the wheelchair provided in an embodiment of this application. As shown in Figure 1, the wheelchair includes a seat 10, a support arm 20, and a chassis 30. The seat 10 and the chassis 30 are connected by the support arm 20, and at least one of the seat 10 and the chassis 30 is mechanically and electrically connected to the support arm 20 in a detachable manner. This allows the wheelchair to be structurally disassembled into at least two parts, and the electrical disassembly and assembly can be completed simultaneously during the mechanical disassembly and assembly process. Therefore, it not only reduces the space required for storage, facilitating placement in limited spaces such as vehicle trunks and improving storage convenience, but also accommodates the complex wiring requirements of multifunctional wheelchairs, preventing wire damage or tangling during disassembly and assembly, ensuring the stability and safety of the wheelchair's functions, and enhancing the user experience.

[0068] In this embodiment, the electrical connection between the seat 10 and the support arm 20 can be a wired electrical connection or a wireless connection, and the electrical connection between the chassis 30 and the support arm 20 can also be a wired electrical connection or a wireless connection. Furthermore, the support arm 20 serves both to connect the seat 10 and the chassis 30 and to support the seat 10.

[0069] Specifically, the seat 10 can be mechanically and electrically connected to the support arm 20 in a detachable manner, and the chassis 30 can also be mechanically and electrically connected to the support arm 20 in a detachable manner. In this way, the wheelchair can be structurally divided into at least three parts: the seat 10, the support arm 20, and the chassis 30.

[0070] Furthermore, in a specific implementation, as shown in Figure 1, the seat 10 and chassis 30 can be detachably mounted on the top and bottom sides of the support arm 20, respectively. In other embodiments, the seat 10 and / or the chassis 30 can also be detachably mounted on the lateral side of the support arm 20 between the top and bottom sides.

[0071] In this embodiment, as shown in FIG1, the seat 10 may include a seat body 110 and a seat cushion 120 and a backrest 130 mounted on the seat body 110. Furthermore, at least one of the seat cushion 120 and the backrest 130 may be detachably mounted to the seat body 110. Thus, the seat 10 can be structurally divided into at least two parts, further reducing the space required for wheelchair storage.

[0072] In some embodiments, as shown in FIG1, the seat cushion 120 of the seat 10 is detachably connected to the seat body 110. Furthermore, in specific implementations, the detachable connection method between the seat cushion 120 and the seat body 110 is not limited. For example, the seat cushion 120 and the seat body 110 can be detachably connected by magnetic attraction, adhesive bonding, or snap-fit. This allows for quick assembly and disassembly of the seat cushion 120 and the seat body 110, and further reduces the space required for wheelchair storage.

[0073] In some specific embodiments, as shown in Figures 1 and 2a-2b, the seat body 110 may include a first connecting frame 111 for supporting the seat cushion 120, and the seat cushion 120 is detachably connected to the first connecting frame 111. Furthermore, in specific implementations, one of the first connecting frame 111 and the seat cushion 120 may be provided with a magnetic element, and the other of the first connecting frame 111 and the seat cushion 120 may be provided with a corresponding magnetic element. The magnetic element and the magnetic attracting element are magnetically attracted to each other, and the first connecting frame 111 and the seat cushion 120 are connected through the attraction of the magnetic elements. For example, as shown in Figures 2a-2b, magnetic elements 1111 can be provided at all four corners of the first connecting frame 111, and magnetic elements (not shown in the figures) can be provided at all four corners of the cushion 120. Thus, the cushion 120 can be installed on the first connecting frame 111 by the magnetic elements 1111 at the four corners of the first connecting frame 111 and the magnetic elements at the four corners of the cushion 120.

[0074] In the above embodiment, as shown in FIG1, the backrest 130 of the seat 10 is detachably connected to the seat body 110. Furthermore, as shown in FIG3a-3b, the seat body 110 may include a second connecting frame 112, and the backrest 130 may be detachably connected to the second connecting frame 112. The second connecting frame 112 serves both to connect the backrest 130 and to support the backrest 130.

[0075] Specifically, the second connecting frame 112 can be connected to the first connecting frame 111 used to support the seat cushion 120. For example, the second connecting frame 112 can be detachably connected to the first connecting frame 111 used to support the seat cushion 120; for instance, the second connecting frame 112 can be connected to the first connecting frame 111 used to support the seat cushion 120 using bolts. In this way, the seat body 110 can be structurally divided into two parts, further reducing the space required for wheelchair storage.

[0076] In some embodiments, as shown in Figures 3a-3b, the seat body 110 may further include a limiting rod 113 connected to the second connecting frame 112, and the backrest 130 may include a first limiting part 131, and the first limiting part 131 is adapted to the limiting rod 113 to ensure that the backrest 130 can be installed on the seat body 110 by cooperating with the limiting rod 113.

[0077] Specifically, as shown in Figure 4, when the backrest 130 and the seat body 110 are connected, the limiting rod 113 can be engaged in the first limiting part 131. When the backrest 130 is subjected to a force F1 in a direction away from the seat body 110 (e.g., the second connecting frame 112), the limiting rod 113 will disengage from the first limiting part 131, thus changing the connection state of the backrest 130 and the seat body 110 to a detached state. Therefore, when it is necessary to detach the backrest 130 from the seat body 110, the user only needs to apply appropriate force to pull the backrest 130 away from the second connecting frame 112 of the seat body 110. When it is necessary to connect the backrest 130 to the seat body 110, the user only needs to apply appropriate force to engage the first limiting part 131 with the limiting rod 113.

[0078] In some specific embodiments, as shown in Figures 3a-3b, the seat body 110 may further include a pivot 114 connected to the second connecting frame 112, and the backrest 130 may further include a second limiting part 132, which is adapted to the pivot 114 to ensure that the backrest 130 and the seat body 110 can be quickly positioned by the cooperation of the second limiting part 132 and the pivot 114.

[0079] Furthermore, as shown in Figure 4, when the backrest 130 and the seat body 110 are connected, the limiting rod 113 is engaged in the first limiting part 131, and the rotating shaft 114 is engaged in the second limiting part 132. When the backrest 130 is subjected to a force F1 in a direction away from the seat body 110 (e.g., the first connecting frame 112), the backrest 130 will rotate around the rotating shaft 114, and the limiting rod 113 will disengage from the first limiting part 131, thereby changing the connection state of the backrest 130 and the seat body 110 to a disassembled state. Thus, when it is necessary to disassemble the backrest 130 from the seat body 110, the user only needs to apply appropriate force to pull the backrest 130 away from the second connecting frame 112 of the seat body 110. When it is necessary to connect the backrest 130 to the seat body 110, the user only needs to first lock the second limiting part 132 onto the pivot 114, and then apply appropriate force to lock the first limiting part 131 onto the limiting rod 113.

[0080] Specifically, as shown in Figure 4, the first limiting part 131 may be provided with a slot 131A and have a first inclined surface 131B and a second inclined surface 131C. The first inclined surface 131B is configured to guide the limiting rod 113 to be engaged in the slot 131A, and the second inclined surface 131C is configured to guide the limiting rod 113 to disengage from the slot 131A. In other words, as shown in Figure 4, the reason why the limiting rod 113 disengages from the first limiting part 131 under the action of external force F1 (i.e., force F1 in the direction away from the seat body 110) is that the first limiting part 131 has an inclined surface (i.e., the second inclined surface 131C) that can guide the limiting rod 113 to disengage from the slot 131A; the reason why the limiting rod 113 is locked in the first limiting part 131 under the action of external force F2 (i.e., force F2 in the direction towards the seat body 110) is that the first limiting part 131 has an inclined surface (i.e., the first inclined surface 131B) that can guide the limiting rod 113 to be locked in the slot 131A.

[0081] Moreover, under the action of external force F1, the rotating shaft 114 will not detach from the second limiting part 132, and the reason why the rotating shaft 114 will not detach from the second limiting part 132 is that the second limiting part 132 does not have an inclined surface for guiding the rotating shaft 111 to detach from the second limiting part 132.

[0082] In specific implementation, as shown in Figures 3a-3b and Figure 4, both the limiting rod 113 and the rotating shaft 114 can be straight rods. The limiting rod 113 and the rotating shaft 114 can be arranged relatively at intervals, for example, they can be arranged relatively parallel at intervals. The rotating shaft 114 can be located below the limiting rod 113. The first limiting part 131 is provided on the back side of the backrest 13. The slot 131A can be an upward-opening V-shaped slot or a U-shaped slot. Furthermore, during the process of engaging the first limiting part 131 onto the limiting rod 113, the two opposite sidewalls of the slot 131A successively contact the limiting rod 113, and the first inclined surface 131B and the second inclined surface 131C also successively contact the limiting rod 113.

[0083] The first inclined surface 131B can be provided on the top surface of the side wall of the slot 131A that first contacts the limiting rod 113, and inclined downward in a direction away from the backrest 130. The second inclined surface 131C can be provided on the inner side wall of the slot 131A that first contacts the limiting rod 113, and inclined outward in a direction away from the slot 131A. Furthermore, the first inclined surface 131B and the second inclined surface 131C can be connected. For example, the connection between the first inclined surface 131B and the second inclined surface 131C can be provided with a rounded corner to facilitate the limiting rod 113 moving along the first inclined surface 131B into the slot 131A and to facilitate the limiting rod 113 moving along the second inclined surface 131C to the outside of the slot 131A.

[0084] Accordingly, as shown in Figure 4, when it is necessary to disassemble the backrest 130 and the seat body 110, the user can apply an external force F1 to the backrest 130 in a direction away from the seat body 110 (e.g., the second connecting frame 112). Under the action of the external force F1, the backrest 130 will rotate around the pivot 114 in a direction away from the seat body 110, and the limiting rod 113 will rise along the second inclined surface 131C until the limiting rod 113 disengages from the first limiting part 131, thus completing the disassembly operation of the backrest 130 and the seat body 110.

[0085] When it is necessary to connect the backrest 130 to the seat body 110, the user can first lock the second limiting part 132 onto the pivot 114, and then apply an external force F2 toward the seat body 110 (e.g., the second connecting frame 112) to the backrest 130. Under the action of the external force F2, the backrest 130 will rotate around the pivot 114 toward the seat body 110, and the limiting rod 113 will rise along the first inclined surface 131B until the limiting rod 113 is locked in the slot 131A, thus completing the connection operation between the backrest 130 and the seat body 110.

[0086] In some examples, as shown in FIG3a, the number of the first limiting part 131 can be at least two, and when the backrest 130 and the seat body 110 are connected, the at least two first limiting parts 131 can be spaced apart and locked at different positions along the length direction of the limiting rod 113 to ensure the connection between the backrest 130 and the seat body 110.

[0087] In some examples, as shown in FIG3a, the number of the second limiting part 132 can be at least two, and when the backrest 130 and the seat body 110 are connected, the at least two second limiting parts 132 can be spaced apart and locked at different positions on the pivot 114 along the length direction of the pivot 114 to ensure the connection between the backrest 130 and the seat body 110.

[0088] In some specific embodiments, as shown in FIG3a, the second connecting frame 112 may be provided with a first mounting hole 112A and a second mounting hole 112B. The opposite ends of the limiting rod 113 may be respectively installed in the first mounting hole 112A and the second mounting hole 112B, and the positions of the opposite ends of the limiting rod 113 in the first mounting hole 112A and the second mounting hole 112B are adjustable, so as to realize that the limiting rod 113 is engaged in the first limiting part 131, or to realize that the limiting rod 113 is disengaged from the first limiting part 131. In this way, when it is difficult for the user to complete the disassembly and assembly of the backrest 130 and the seat body 110 by applying external force to the backrest 130, the user can adjust the positions of the opposite ends of the limiting rod 113 in the first mounting hole 112A and the second mounting hole 112B to realize that the limiting rod 113 is engaged in the first limiting part 131, or to realize that the limiting rod 113 is disengaged from the first limiting part 131.

[0089] Specifically, as shown in Figures 3a and 3b, the seat body 110 may further include a spring 115. One end of the spring 115 may be fixed to the second connecting frame 112, and the other end of the spring 115 may be connected to the limiting rod 113. The spring 115 may be configured to apply a force to the limiting rod 113 to prevent the limiting rod 113 from disengaging from the first limiting part 131. In this way, the relative positions of the limiting rod 113 within the first mounting hole 112A and the second mounting hole 112B can be kept unchanged without the user actively adjusting the positions of the relative ends of the limiting rod 113 within the first mounting hole 112A and the second mounting hole 112B.

[0090] In specific implementation, as shown in Figures 3a and 3b, the second connecting frame 112 may include a U-shaped frame with an opening facing downwards. The first mounting hole 112A and the second mounting hole 112B may be respectively provided on the two opposite side plates of the U-shaped frame. The width of the first mounting hole 112A and the second mounting hole 112B may be equal to or slightly larger than the width of the limiting rod 113, so as to ensure that the opposite ends of the limiting rod 113 can pass smoothly through the corresponding first mounting hole 112A and the second mounting hole 112B, and to facilitate the adjustment of the position of the opposite ends of the limiting rod 113 in the corresponding first mounting hole 112A and the second mounting hole 112B.

[0091] Furthermore, the aforementioned pivot 114 can be located below the limiting rod 113 and spaced apart from it. The two ends of the pivot 114 can be fixedly connected to the two opposite side plates of the U-shaped frame. The spring 115 can be located between the pivot 114 and the limiting rod 113, with one end fixed to one side plate of the U-shaped frame and the other end fixed to the limiting rod 113. When the backrest 130 and the seat body 110 are connected, the spring 115 can be in a stretched state, possessing a certain stored energy value, to hold and fix the limiting rod 113.

[0092] In some examples, as shown in Figure 3a, there can be two springs 115. One end of each spring 115 can be fixed to the two opposite side plates of the U-shaped frame, and the other end can be fixed to the opposite ends of the limiting rod 113.

[0093] In the above embodiment, as shown in FIG1, the electrical connection between the seat 10 and the support arm 20 can be a wired electrical connection. Furthermore, the seat 10 may be provided with a seat connecting seat 140 (as shown in FIG2a-2b), and the support arm 20 may be provided with a first support arm connecting seat 210 (as shown in FIG5), and the seat 10 and the support arm 20 can be wiredly connected through the seat connecting seat 140 and the first support arm connecting seat 210.

[0094] Specifically, as shown in Figure 6, the seat 10 may integrate a seat control board, and the support arm 20 may integrate a support arm control board. The seat control board integrated in the seat 10 and the support arm control board integrated in the support arm 20 can be electrically connected through the seat connecting seat 140 and the first support arm connecting seat 210. For example, the seat 10 may also integrate multiple seat-side functional devices electrically connected to the seat control board, and the seat control board may specifically be a smart board. In this way, the wheelchair seat can have multiple functions, improving the wheelchair's level of intelligence.

[0095] Specifically, as shown in FIG7a, the aforementioned seat connecting base 140 may include a first connector 141 electrically connected to the connecting circuit board of the seat 10, and the connecting circuit board of the seat 10 is electrically connected to the aforementioned seat electronic control board integrated in the seat 10. As shown in FIG8a, the aforementioned first support arm connecting base 210 may include a second connector 211 electrically connected to the first connecting circuit board of the support arm 20, and the first connecting circuit board of the support arm 20 is electrically connected to the aforementioned support arm electronic control board integrated in the support arm 20. Furthermore, when the seat 10 and the support arm 20 are in a connected state, the first connector 141 and the second connector 211 are connected to realize the wired electrical connection between the seat 10 and the support arm 20; when the seat 10 and the support arm 20 are in a disassembled state, the first connector 141 and the second connector 211 are separated to disconnect the wired electrical connection between the seat 10 and the support arm 20.

[0096] It is understood that the connecting circuit board of the seat 10 is electrically connected to the electrical wiring arranged on the seat 10, and the first connecting circuit board of the support arm 20 is electrically connected to the electrical wiring arranged on the support arm 20. Thus, through the cooperation of the first connector and the second connector, the electrical assembly and disassembly of the support arm 20 and the seat 10 can be realized.

[0097] Furthermore, in a specific implementation, the connecting circuit board of the seat 10 can be integrated into the seat connecting base 140, and can specifically be disposed on the first connector 141. The first connecting circuit board of the support arm 20 can be integrated into the first support arm connecting base 210, and can specifically be disposed on the second connector 211.

[0098] In some embodiments, as shown in FIG8a, the first support arm connector 210 may further include a spring 213, and the spring 213 is configured to provide a force toward the first connector 141 to the second connector 211 when the first connector 141 and the second connector 211 are in a connected state, so as to ensure the stability of the connection between the first connector 141 and the second connector 211.

[0099] Specifically, the first support arm connector 210 may include a mounting base 215. One end of the spring 213 may be fixed to the side of the mounting base 215 facing the seat 10, for example, by screws 216 (as shown in Figure 8b). The other end of the spring 213 may be fixed to the side of the second connector 211 away from the seat 10, for example, by screws. Furthermore, when the seat 10 and the support arm 20 are connected, the first connector 141 abuts against the side of the second connector 211 facing the seat 10 (as shown in Figure 9). The spring 213 is compressed and has a certain energy storage value. Therefore, at this time, the spring 213 can provide a force to the second connector 211 towards the first connector 141, so that the first connector 141 and the second connector 211 are firmly connected. In addition, during the process of disengaging the first connector 141 from the second connector 211, the spring 213 will release stored energy and be able to pull the second connector 211 to achieve the disengagement of the second connector 211 from the first connector 141.

[0100] Furthermore, it should be noted that by providing the aforementioned spring 213 in the first support arm connector 210 in this embodiment, it not only ensures that the second connector 211 has a certain floating space, which helps to eliminate the positional tolerance when the first connector 141 and the second connector 211 are mated, but also provides a force to the second connector 211 toward the first connector 141 when the seat 10 and the support arm 20 are installed. This force serves as the mating force between the first connector 141 and the second connector 211, enabling the first connector 141 and the second connector 211 to mate, thereby realizing the electrical connection between the seat 10 and the support arm 20.

[0101] Specifically, one of the seat connecting seat 140 and the first support arm connecting seat 210 may be provided with a positioning post, and the other of the seat connecting seat 140 and the first support arm connecting seat 210 may be provided with a positioning hole for the positioning post to be inserted. For example, as shown in Figures 7a and 8a, the seat connecting seat 140 may be provided with a positioning post 142, and the first support arm connecting seat 210 may be provided with a positioning hole 212 for the positioning post 142 to be inserted. In this way, during the connection of the first connector 141 and the second connector 211, rapid positioning of the first connector 141 and the second connector 211 can be achieved, thereby ensuring that the first connector 141 and the second connector 211 can be mated.

[0102] Specifically, one of the first connector 141 and the second connector 211 can be a male connector, and the other of the first connector 141 and the second connector 211 can be a female connector. Furthermore, in specific implementations, the energized one of the first connector 141 and the second connector 211 (for example, the second connector 211) can be a female connector, and the other can be a male connector, thereby reducing the problem of electric shock caused by energized connectors.

[0103] The male connector may include one or more pins, and the female connector may have one or more sockets for the male connector pins to be inserted. In actual use, by inserting the male connector pins into the sockets of the female connector, the male and female connectors can be connected, thus electrically connecting the seat 10 and the support arm 20; by disengaging the male connector pins from the sockets of the female connector, the electrical connection between the seat 10 and the support arm 20 can be disconnected.

[0104] In the above embodiments, the support arm 20 may include a groove 21 (as shown in FIG. 5), and the seat 10 may include a push rod 11 (as shown in FIG. 2b and 7b). The push rod 11 is adapted to the groove 21, and the seat 10 and the support arm 20 can be detachably connected through the groove 21 and the push rod 11. Thus, when the seat 10 and the support arm 20 are installed, the user only needs to engage the push rod 11 in the groove 21 to achieve the mechanical connection between the seat 10 and the support arm 20.

[0105] Specifically, as shown in Figure 7b, the aforementioned seat 10 may further include a seat-side removal handle 12 and a seat-side handle pivot 13. The seat-side removal handle 12 is rotatably connected to the seat-side handle pivot 13, and the seat-side removal handle 12 can be configured to move a push rod 11 when rotating around the seat-side handle pivot 13, thereby engaging or disengaging the push rod 11 from the groove 21. Thus, the user can complete the disassembly and installation of the aforementioned seat 10 simply by forcefully turning the seat-side handle pivot 13.

[0106] Specifically, as shown in Figure 7b, the seat 10 may further include a fixed shaft 14 and a swing arm 15. The fixed shaft 14 fixes the seat side removal handle 12 to the swing arm 15, and the seat side removal handle 12 may be specifically configured such that when it rotates around the seat side handle pivot 13, it drives the push rod 11 to move through the swing arm 15.

[0107] In some specific embodiments, as shown in FIG9, when the seat 10 and support arm 20 are connected, the push rod 11 is engaged in the groove 21, and the seat-side removal handle 12 can be in a horizontal state. Furthermore, when it is necessary to disassemble the seat 10 and support arm 20, the user only needs to apply appropriate force to lift the seat-side removal handle 12 upwards to a vertical state, causing the seat-side removal handle 12 to rotate upwards around the seat-side handle pivot 13. This allows the force to be transmitted to the swing arm 15 through the fixed shaft 14, thereby enabling the swing arm 15 to drive the push rod 11 to move along the opening direction of the groove 21 (i.e., the horizontal leftward direction shown in FIG9), thus disengaging the push rod 11 from the groove 21 and completing the disassembly operation of the seat 10 and support arm 20.

[0108] Furthermore, when it is necessary to connect the seat 10 and the support arm 20, if the seat-side removal handle 12 is in a horizontal state, the user can directly push the push rod 11 into the groove 21, so that the push rod 11 is locked in the groove 21, thus completing the connection operation between the seat 10 and the support arm 20; or, the user can first forcefully lift the seat-side removal handle 12 upwards to make the seat-side removal handle 12 vertical, then align the support arm 20 with the seat 10, and then forcefully pull the seat-side removal handle 12 downwards to a horizontal state, so that the seat-side removal handle 12 rotates downwards around the seat-side handle pivot 13, thereby transmitting force to the swing arm 15 through the fixed shaft 14, so that the swing arm 15 drives the push rod 11 to move in the opposite direction to the opening direction of the groove 21 (that is, the horizontal rightward direction shown in Figure 9), so that the push rod 11 is locked in the groove 21, thus completing the connection operation between the seat 10 and the support arm 20.

[0109] Furthermore, it is understood that when the seat 10 and support arm 20 are disassembled, the seat side disassembly handle 12 can also be used as a lifting handle to lift the entire seat 10 so as to facilitate the transport of the disassembled seat 10.

[0110] Furthermore, in specific implementation, as shown in Figure 7b, the aforementioned push rod 11, seat-side removal handle 12, seat-side handle pivot 13, fixed shaft 14, and swing arm 15 can be integrated into the aforementioned seat connecting seat 140. As shown in Figure 8c, the aforementioned groove 21 can be specifically provided on one lateral side surface of the aforementioned first support arm connecting seat 210 (for example, the left side surface shown in Figure 9). In this way, the aforementioned seat 10 and support arm 20 are mechanically and electrically connected through the aforementioned seat connecting seat 140 and first support arm connecting seat 210.

[0111] Specifically, as shown in Figures 2a-2b, the seat connecting seat 140 can be located on the bottom side of the seat 10, and the seat body 110 (or the first connecting frame 111 of the seat body 110) can be configured such that, when the seat cushion 120 and the seat body 110 are in a disassembled state, the user can pass through the seat body 110 (or the first connecting frame 111 of the seat body 110) to move the seat-side disassembly handle 12 to achieve the disassembly and assembly of the seat 10 and the support arm 20.

[0112] In some examples, as shown in Figure 2a, when the seat cushion 120 and seat body 110 are disassembled, the push rod 11 located on the bottom side of the seat 10 is invisible to the user. Thus, the user can assemble and disassemble the seat 10 and support arm 20 without visual inspection.

[0113] For example, when the cushion 120 and the seat body 110 are in the disassembled state, the push rod 11 located on the bottom side of the seat 10 can be covered by an opaque cover so that it is not visible to the user.

[0114] Furthermore, in practice, to reduce the difficulty of alignment during blind installation, the seat 10 and support arm 20 can be marked with markers to assist the user in blind installation of the seat 10 and support arm 20.

[0115] For example, as shown in Figures 7b and 7c, the surface of the opaque shielding member of the push rod 11 may be provided with positioning marks M1 / M2. The positioning marks M1 / M2 are used to mark the orientation of the shielded push rod 11 to provide guidance for blind installation to the user and reduce the difficulty of blind installation.

[0116] Specifically, as shown in Figures 7b and 7c, the surface of the opaque shielding member of the push rod 11 can be provided with a longitudinal positioning mark M1 and a transverse positioning mark M2. The longitudinal positioning mark M1 can be a straight line, or appear as a straight line from a top view, and its position is not limited; for example, it can correspond to the perpendicular bisector of the shielded push rod 11. The transverse positioning mark M2 can be a circular line, and there can be two transverse positioning marks M2. The positions of these two transverse positioning marks M2 are not limited; for example, they can correspond to the positions of the two ends of the shielded push rod 11. Thus, the push rod 11 can be aligned with the groove 21 using the longitudinal positioning mark M1 and the transverse positioning mark M2, reducing the difficulty of alignment during blind installation.

[0117] In some examples, with the seat cushion 120 and seat body 110 in a disassembled state, the push rod 11 located on the underside of the seat 10 is visible to the user. Thus, the user can assemble and disassemble the seat 10 and support arm 20 in a non-blind assembly manner.

[0118] For example, when the seat cushion 120 and the seat body 110 are in the disassembled state, the push rod 11 located on the bottom side of the seat 10 can be covered by a transparent cover so that it is visible to the user. This allows the transparent cover to protect the push rod 11. During the disassembly and assembly of the seat 10 and the support arm 20, the user can visually observe the push rod 11 and quickly and accurately engage the push rod 11 in the groove 21 to complete the disassembly and assembly of the seat 10 and the support arm 20, thus avoiding the problem of blind assembly.

[0119] For example, as shown in Figure 2b, when the seat cushion 120 and the seat body 110 are in the disassembled state, the push rod 11 located on the bottom side of the seat 10 can be at least partially exposed so that it is visible to the user. Thus, during the disassembly and assembly of the seat 10 and the support arm 20, the user can visually observe the push rod 11 and quickly and accurately engage the push rod 11 in the groove 21 to complete the disassembly and assembly of the seat 10 and the support arm 20, and avoid the problem of blind assembly.

[0120] In some examples, the first support arm connector 210 and seat connector 140 can be made of aluminum. Furthermore, by providing reinforcing plates 22 on the first support arm connector 210 and seat connector 140, wear and deformation of the aluminum first support arm connector 210 and seat connector 140 can be reduced.

[0121] For example, as shown in FIG9, a reinforcing sheet 22 can be provided on the inner wall surface of the groove 21 to reduce the wear and deformation of the groove 21.

[0122] In some embodiments, as shown in FIG10, the wheelchair may further include a decorative panel 40, which may be fitted onto the outside of the support arm 20 to enhance the overall aesthetics of the wheelchair.

[0123] In the above embodiments, as shown in FIG1, the electrical connection between the chassis 30 and the support arm 20 can be a wired electrical connection. Furthermore, as shown in FIG11c, the chassis 30 can be provided with a chassis connecting seat 301, and the support arm 20 can be provided with a second support arm connecting seat 220, and the chassis 30 and the support arm 20 can be wiredly connected through the chassis connecting seat 301 and the second support arm connecting seat 220.

[0124] Specifically, as shown in Figure 6, the support arm 20 may integrate a support arm electronic control board, and the chassis 30 may integrate a chassis electronic control board. The chassis electronic control board integrated in the chassis 30 and the support arm electronic control board integrated in the support arm 20 can be electrically connected through the chassis connecting seat 301 and the second support arm connecting seat 220. For example, the support arm 20 may also integrate at least one support arm-side functional device electrically connected to the support arm electronic control board, and the support arm electronic control board may specifically be a support arm motor board. This further enhances the intelligence level of the wheelchair.

[0125] Specifically, the chassis connection seat 301 may include a third connector (not shown in the figure) electrically connected to the connection circuit board of the chassis 30, and the connection circuit board of the chassis 30 is electrically connected to the chassis electronic control board integrated in the chassis 30. The second support arm connection seat 220 may include a fourth connector (not shown in the figure) electrically connected to the second connection circuit board of the support arm 20, and the second connection circuit board of the support arm 20 is integrated to the support arm electronic control board. Furthermore, when the seat 10 and the support arm 20 are connected, the third connector and the fourth connector are connected to achieve a wired electrical connection between the chassis 30 and the support arm 20; when the chassis 30 and the support arm 20 are disassembled, the third connector and the fourth connector are separated to disconnect the wired electrical connection between the chassis 30 and the support arm 20.

[0126] It is understood that the connecting circuit board of the chassis 30 is electrically connected to the electrical wiring arranged on the chassis 30, and the second connecting circuit board of the support arm 20 is electrically connected to the electrical wiring arranged on the support arm 20. Thus, through the cooperation of the third connector and the fourth connector, the electrical assembly and disassembly of the support arm 20 and the chassis 30 can be realized.

[0127] Furthermore, in a specific implementation, the connecting circuit board of the chassis 30 can be integrated into the chassis connecting seat 301, and can specifically be disposed on the third connector. The second connecting circuit board of the support arm 20 can be integrated into the first support arm 20 connecting seat, and can specifically be disposed on the fourth connector.

[0128] It is understood that the chassis connecting seat 301 and the second support arm connecting seat 220 used for electrically connecting the chassis 30 and the support arm 20 in this embodiment can be structurally similar to the seat connecting seat 140 and the first support arm connecting seat 210 used for electrically connecting the seat 10 and the support arm 20.

[0129] Furthermore, the specific implementation of the chassis connecting seat 301 and the second support arm connecting seat 220 can be referred to the specific implementation of the seat connecting seat 140 and the first support arm connecting seat 210. It is only necessary to replace the seat 10, support arm 20, seat connecting seat 140, first support arm connecting seat 210, first connector and second connector in the specific implementation of the seat connecting seat 140 and the first support arm connecting seat 210 with support arm 20, chassis 30, second support arm connecting seat 220, chassis connecting seat 301, fourth connector and third connector respectively to obtain the specific implementation of the chassis connecting seat 301 and the second support arm connecting seat 220. Therefore, it will not be described in detail here.

[0130] In the above embodiments, as shown in Figures 11a-11b, the support arm 20 may include a docking limiting part 23, and the chassis 30 may include a locking tongue 31. The locking tongue 31 is adapted to the docking limiting part 23, and the chassis 30 and the support arm 20 can be detachably connected through the locking tongue 31 and the docking limiting part 23. Specifically, the locking tongue 31 can have a locked state and an unlocked state. When the support arm 20 and the chassis 30 are connected, the docking limiting part 23 engages with the locking tongue 31, and the locking tongue 31 is in a locked state. When the support arm 20 and the chassis 30 are disassembled, the docking limiting part 23 disengages from the locking tongue 31. Thus, when it is necessary to connect the chassis 30 and the support arm 20, the user only needs to forcefully insert the docking limiting part 23 into the locking tongue 31 to connect the chassis 30 and the support arm 20; when it is necessary to disassemble the chassis 30 and the support arm 20, the user only needs to forcefully disengage the docking limiting part 23 from the locking tongue 31 to separate the chassis 30 from the support arm 20.

[0131] Furthermore, it can be understood that when the locking tongue 31 and the docking limit part 23 are in a locked state, the locking tongue 31 can be considered to be in a locked state; when the locking tongue 31 and the docking limit part 23 are not in a locked state, the locking tongue 31 can be considered to be in an unlocked state.

[0132] Specifically, as shown in Figures 11a-11b, the chassis 30 may further include a chassis-side disassembly handle 32. The chassis-side disassembly handle 32 and the locking tongue 31 may be respectively located on opposite sides of the mounting position of the support arm 20. Furthermore, the chassis-side disassembly handle 32 may be configured to unlock the locking tongue 31 when subjected to a force in a specified direction. Thus, the user only needs to apply appropriate force to the chassis-side disassembly handle 32 to change the locking tongue 31 from a locked state to an unlocked state, thereby completing the disassembly operation of the chassis 30 and the support arm 20.

[0133] Specifically, as shown in Figures 11a-11b, the chassis 30 may further include a transmission rod 33, a chassis side handle pivot 34, and a transmission component 35. The chassis side detachable handle 32 is fixedly connected to the transmission rod 33, the transmission rod 33 is rotatably connected to the chassis side handle pivot 34, and the transmission rod 33 is connected to the locking tongue 31 via the transmission component 35. Furthermore, the chassis side detachable handle 32 may be specifically configured such that, when subjected to a force in a specified direction, it drives the transmission rod 33 to rotate around the chassis side handle pivot 34, and during this rotation, the transmission rod 33 unlocks the locking tongue 31 via the transmission component 35.

[0134] It should be noted that, in the process of changing the locking tongue 31 from the locked state to the unlocked state, this embodiment does not limit the specific direction and magnitude of the force applied to the chassis-side detachable handle 32 in a specified direction. The chassis-side detachable handle 32 only needs to be able to unlock the locking tongue 31 under the action of the force in that specified direction. For example, taking the chassis-side detachable handle 32 shown in Figure 11a as an example, when the chassis-side detachable handle 32 is subjected to a counterclockwise force, it will unlock the locking tongue 31 under the action of that counterclockwise force.

[0135] In some examples, the aforementioned transmission rod 33 may be L-shaped, and the aforementioned transmission rod 33 may be able to rotate around the aforementioned chassis side handle pivot 34 after being subjected to force at one end.

[0136] In some specific embodiments, as shown in Figures 11a-11b, the support arm 20 may further include a docking shaft 24, and the chassis 30 may further include a positioning part 36. The positioning part 36 is adapted to the docking shaft 24, and the positioning part 36 and the locking tongue 31 may be respectively located on opposite sides of the installation position of the support arm 20.

[0137] Furthermore, when the support arm 20 and the chassis 30 are connected, the docking shaft 24 is positioned at the positioning part 36. When the locking tongue 31 changes from the locked state to the unlocked state, the support arm 20 will rotate around the docking shaft 24 under the force in the specified direction, and the docking limiting part 23 will disengage from the locking tongue 31, so that the support arm 20 and the chassis 30 change from the connected state to the disassembled state.

[0138] It should be noted that during the disassembly of the support arm 20 from the chassis 30, this embodiment does not limit the specific direction and magnitude of the force applied to the support arm 20 in a specified direction. The support arm 20 only needs to be able to disengage the docking limiting part 23 from the locking tongue 31 under the action of the force in that specified direction. For example, taking the support arm 20 shown in Figure 11a as an example, when the support arm 20 is subjected to a clockwise force, it will cause the docking limiting part 23 to disengage from the locking tongue 31 under the action of that clockwise force.

[0139] In specific implementation, as shown in Figure 11a, when it is necessary to disassemble the chassis 30 and the support arm 20, the user can first apply a counterclockwise force to the chassis-side disassembly handle 32. Under the action of this counterclockwise force, the chassis-side disassembly handle 32 will drive the transmission rod 33 to rotate around the chassis-side handle pivot 34. During the rotation of the transmission rod 33 around the chassis-side handle pivot 34, it will transmit the force received from the chassis-side disassembly handle 32 to the transmission component 35. After being subjected to force, the transmission component 35 will apply a leftward force to the locking tongue 31, and the locking tongue 31 will change from the locked state to the unlocked state under the action of this leftward force. Afterwards, the user can apply a clockwise force to the support arm 20, causing the support arm 20 to rotate around its docking pivot 24, thereby separating the docking limit part 23 from the locking tongue 31. Then, the docking pivot 24 of the support arm 20 is separated from the positioning part 36 of the chassis 30, thus completing the disassembly operation of the chassis 30 and the support arm 20.

[0140] When it is necessary to connect the chassis 30 and the support arm 20, the user can first position the docking pivot 24 of the support arm 20 in the positioning part 36 of the chassis 30, and then forcefully rotate the support arm 20 around its docking pivot 24 towards the locking tongue 31 until the docking limiting part 23 of the support arm 20 is engaged in the locking tongue 31, thereby changing the locking tongue 31 from the locked state to the unlocked state, thus completing the connection operation between the chassis 30 and the support arm 20.

[0141] In some examples, the number of locking tongues 31 can be at least two, and when the chassis 30 and the support arm 20 are connected, the at least two locking tongues 31 can be engaged at different positions of the docking limit part 23 to ensure the connection between the chassis 30 and the support arm 20.

[0142] In the above embodiment, as shown in FIG12, the chassis 30 may include a front wheel module 310 and a rear wheel module 320, and the front wheel module 310 and the rear wheel module 320 may be detachably connected. Thus, by disassembling the chassis 30 into the two components of the front wheel module 310 and the rear wheel module 320, the space required for the wheelchair to be stored can be further reduced.

[0143] Specifically, the front wheel module 310 and the rear wheel module 320 can be mechanically and electrically connected in a detachable manner, and the electrical connection between the front wheel module 310 and the rear wheel module 320 can be a wired connection or a wireless connection. Thus, during the mechanical assembly and disassembly of the front wheel module 310 and the rear wheel module 320, the electrical assembly and disassembly of the two modules can be completed simultaneously. This adapts to the complex wiring requirements of multi-functional wheelchairs, avoiding wire damage or tangling during assembly and disassembly, ensuring the stability and safety of the wheelchair's functions, and improving the user experience.

[0144] Specifically, in the above embodiment where the support arm 20 is detachably connected to the chassis 30, as shown in Figures 13a-13b, the support arm 20 may be detachably connected to the front wheel module 310 included in the chassis 30.

[0145] In some embodiments, as shown in FIG12, the electrical connection between the front wheel module 310 and the rear wheel module 320 is a wired electrical connection. Furthermore, the front wheel module 310 may include a front wheel connector 312 (as shown in FIG13b), and the rear wheel module 320 may include a rear wheel connector 327 (as shown in FIG14b), and the front wheel module 310 and the rear wheel module 320 can be wiredly connected via the front wheel connector 312 and the rear wheel connector 327.

[0146] Specifically, as shown in Figure 15, the front wheel module 310 may integrate a front wheel electronic control board, and the rear wheel module 320 may integrate a rear wheel electronic control board. The front wheel electronic control board integrated in the front wheel module 310 and the rear wheel electronic control board integrated in the rear wheel module 320 can be electrically connected through the rear wheel connecting seat 327 and the front wheel connecting seat 312. For example, the front wheel module 310 may also integrate multiple front wheel-side functional devices electrically connected to the front wheel electronic control board, and the front wheel electronic control board may specifically be a vehicle control board. In this way, the front wheel module of the wheelchair can have multiple functions, improving the intelligence level of the wheelchair.

[0147] Specifically, as shown in Figure 15, the rear wheel module 320 may further integrate multiple rear wheel-side functional devices electrically connected to the rear wheel electronic control board. For example, the rear wheel electronic control board may specifically be a rear wheel electronic speed control board. For example, as shown in Figure 15, the multiple rear wheel-side functional devices may include two rear wheels (i.e., the left rear wheel and the right rear wheel). For example, as shown in Figure 15, the multiple rear wheel-side functional devices may also include a battery.

[0148] Specifically, the aforementioned front wheel connector 312 may include a fifth connector (not shown in the figure) electrically connected to the connection circuit board of the front wheel module 310, and the connection circuit board of the front wheel module 310 is electrically connected to the aforementioned front wheel electronic control board integrated in the front wheel module 310. The aforementioned rear wheel connector 327 may include a sixth connector (not shown in the figure) electrically connected to the connection circuit board of the rear wheel module 320, and the connection circuit board of the rear wheel module 320 is electrically connected to the aforementioned rear wheel electronic control board integrated in the rear wheel module 320. Furthermore, when the front wheel module 310 and the rear wheel module 320 are in a connected state, the fifth connector and the sixth connector are connected to realize a wired electrical connection between the front wheel module 310 and the rear wheel module 320; when the front wheel module 310 and the rear wheel module 320 are in a disassembled state, the fifth connector and the sixth connector are separated to disconnect the wired electrical connection between the front wheel module 310 and the rear wheel module 320.

[0149] It is understood that the connecting circuit board of the front wheel module 310 is electrically connected to the electrical circuit arranged in the front wheel module 310, and the connecting circuit board of the rear wheel module 320 is electrically connected to the electrical circuit arranged in the rear wheel module 320. Thus, through the cooperation of the fifth connector and the sixth connector, the electrical assembly and disassembly of the front wheel module 310 and the rear wheel module 320 can be realized.

[0150] Furthermore, in a specific implementation, the connecting circuit board of the aforementioned front wheel module 310 can be integrated into the aforementioned front wheel connector 312, and can specifically be disposed on the fifth connector. The connecting circuit board of the aforementioned rear wheel module 320 can be integrated into the aforementioned rear wheel connector 327, and can specifically be disposed on the sixth connector.

[0151] It is understood that the front wheel connector 312 and rear wheel connector 327 used for electrically connecting the front wheel module 310 and the rear wheel module 320 in this embodiment can be structurally similar to the seat connector 140 and the first support arm connector 210 used for electrically connecting the seat 10 and the support arm 20.

[0152] Furthermore, the specific implementations of the aforementioned front wheel connector 312 and rear wheel connector 327 can refer to the specific implementations of the aforementioned seat connector 140 and first support arm connector 210. Only by replacing the seat 10, support arm 20, seat connector 140, first support arm connector 210, first connector, and second connector in the specific implementations of the aforementioned seat connector 140 and first support arm connector 210 with the front wheel module 310, rear wheel module 320, front wheel connector 312, rear wheel connector 327, fifth connector, and sixth connector, respectively, can the specific implementations of the aforementioned front wheel connector 312 and rear wheel connector 327 be obtained. Therefore, they will not be described in detail here.

[0153] In some embodiments, as shown in Figures 14a-14b, the front wheel module 310 may include a frame 311, and the rear wheel module 320 may include a limiting swing arm 321, which is adapted to the frame 311. Furthermore, the front wheel module 310 and the rear wheel module 320 can be detachably connected via the frame 311 and the limiting swing arm 321. For example, the front wheel module 310 and the rear wheel module 320 can be connected by engaging the frame 311 with the limiting swing arm 321, and can be separated by detaching the frame 311 from the limiting swing arm 321.

[0154] Specifically, as shown in Figures 14a-14b, the rear wheel module 320 may further include a module separation handle 322, which is fixedly connected to the limiting swing arm 321. Furthermore, when the front wheel module 310 and the rear wheel module 320 are in the connected state, the frame 311 and the limiting swing arm 321 can be connected together by a snap-fit ​​mechanism. The module separation handle 322 can be configured to, when subjected to a force in a specified direction, cause the frame 311 to disengage from the limiting swing arm 321, thereby changing the connection state of the frame 311 and the limiting swing arm 321 to a disassembled state.

[0155] It should be noted that during the disassembly of the front wheel module 310 and the rear wheel module 320, this embodiment does not limit the specific direction and magnitude of the force on the module separation handle 322 in the specified direction. The module separation handle 322 can drive the limiting swing arm 321 to detach from the frame 311 under the action of the force in the specified direction.

[0156] In practice, as shown in Figures 14a and 14b, when it is necessary to disassemble the front wheel module 310 and the rear wheel module 320, the user can pull the module separation handle 322 backward to drive the limit swing arm 321 to separate from the frame 311, thereby completing the disassembly operation of the front wheel module 310 and the rear wheel module 320.

[0157] When it is necessary to connect the front wheel module 310 and the rear wheel module 320, the user can apply appropriate force to lock the frame 311 into the limiting swing arm 321 to complete the connection operation of the front wheel module 310 and the rear wheel module 320.

[0158] In some embodiments, as shown in Figures 14a-14b, the frame 311 may include a front wheel side limiting rod 3111, and the rear wheel module 320 may also include a rear wheel side limiting part 323, which is adapted to the front wheel side limiting rod 3111. Furthermore, when the front wheel module and the rear wheel module are in a connected state, the rear wheel side limiting part 323 and the limiting swing arm 321 together clamp and fix the front wheel side limiting rod 3111, ensuring a secure connection between the front wheel module 310 and the rear wheel module 320. The user only needs to apply appropriate force to detach the limiting swing arm 321 from the frame 311 to achieve the transition from a connected state to a detached state for the front wheel module 310 and the rear wheel module 320.

[0159] In some examples, the number of the aforementioned limiting arms 321 can be at least two, and when the front wheel module 310 and the rear wheel module 320 are in the connected state, the at least two limiting arms 321 can be locked at different positions on the frame 311 (e.g., the front wheel side limiting rod 3111 of the frame 311) to ensure the connection between the front wheel module 310 and the rear wheel module 320.

[0160] In the above embodiment, as shown in FIG14b, the rear wheel module 320 may further include an anti-tilt wheel bracket 328. The anti-tilt wheel bracket 328 is located on the rear side of the rear wheel module 320 and is used to prevent the wheelchair from tilting backward and avoid accidents. Furthermore, the anti-tilt wheel bracket 328 and the main frame of the rear wheel module 320 may be detachably connected, thereby enabling the rear wheel module 320 to be disassembled into more and smaller components, so as to more effectively reduce the space required for the wheelchair during storage.

[0161] For example, as shown in FIG14b, the anti-roll wheel bracket 328 may include a mounting bracket 3281 and an anti-roll wheel 3282, wherein the mounting bracket 3281 is detachably connected to the main frame of the rear wheel module 320, and the anti-roll wheel 3282 is mounted on the bottom rear end of the mounting bracket 10.

[0162] Furthermore, in specific implementations, the detachable connection method between the anti-roll wheel bracket 328 and the main frame of the rear wheel module 320 is not limited. For example, the anti-roll wheel bracket 328 and the main frame of the rear wheel module 320 can be detachably connected by snap-fit.

[0163] In the above embodiments, as shown in Figures 14a-14b and Figure 16, the rear wheel module 320 may further include a battery compartment 324 and a battery 325, wherein the battery 325 is detachably installed in the battery compartment 324.

[0164] Specifically, as shown in Figure 16, the battery compartment 324 may be provided with an unlocking device 324A, which may include a limiting body 3241. The battery 325 may be provided with a recessed portion 3251, which is adapted to the limiting body 3241, and the battery 325 and the battery compartment 324 can be detachably installed through the recessed portion 3251 and the limiting body 3241.

[0165] In some embodiments, as shown in Figures 17 and 18, the unlocking device 324A may further include a button 3242, an elastic body 3243, and a linkage mechanism 3244. The button 3242 is disposed on the linkage mechanism 3244, which is connected to a limiting body 3241. The elastic body 3243 is connected to either the linkage mechanism 3244 or the limiting body 3241. Furthermore, when the battery 325 and battery compartment 324 are in the installed state, the limiting body is engaged within the recessed portion 3251. The button 3242 can be configured such that, when pressed, the linkage mechanism 3244 disengages the limiting body 3241 from the recessed portion 3251, thereby changing the battery 325 and battery compartment 325 from the installed state to the disassembled state. During the disengagement of the limiting body 3241 from the recessed portion 3251, the elastic body 3243 is stretched. Thus, by pressing button 3242, the user can drive linkage mechanism 3244 to pull limit body 3241, causing limit body 3241 to contract. During its contraction, limit body 3241 will cause elastic body 3243 to stretch, allowing elastic body 3243 to store energy. Then, when the user releases button 3242, elastic body 3243 will release the stored energy, causing limit body 3241 to reset.

[0166] In practice, when it is necessary to install the battery 325 into the battery compartment 324, the user can place the battery 325 into the battery compartment 324 and align and engage the recessed portion 3251 of the battery 325 with the limiting body 3241, thus completing the installation operation of the battery 325. Furthermore, with the battery 325 installed in the battery compartment 324, the limiting body 3241 remains extended under the action of the elastic body 3243 and tightly engages with the recessed portion 3251 of the battery 325, thereby securing the battery 325 to the battery compartment 324.

[0167] When it is necessary to remove battery 325 from battery compartment 324, the user can press button 3242. The pressing action received by button 3242 is transmitted through linkage mechanism 3244, causing linkage mechanism 3244 to pull limiting body 3241. Under the pull of linkage mechanism 3244, limiting body 3241 retracts, and at the same time, elastic body 3243 is stretched and begins to store energy. When limiting body 3241 is fully retracted, limiting body 3241 disengages from the recess 2351 of battery 325, and battery 325 is no longer fixed and can be removed.

[0168] Furthermore, it should be noted that during the process of removing the battery 325 from the battery compartment 324, when the user releases the button 3242, the elastic body 3243 will release the stored energy, pushing the linkage mechanism 3244 and the limiting body 3241 to reset, so that the limiting body 3241 extends again to facilitate the next battery installation operation.

[0169] In some examples, the end of the aforementioned limiting body 3241 may contact the battery 325 inside the battery compartment 324 in a line contact manner, or it may contact the battery 325 inside the battery compartment 324 in a surface contact manner. It is understood that, compared to the line contact method, the surface contact method is beneficial to reducing the wear caused to the limiting body 2341 by the battery 235 removal and installation operations.

[0170] Furthermore, this embodiment does not limit the specific shape of the limiting body 3241. The limiting body 3241 only needs to be able to move along the side wall of the battery 325 and be able to fit into the recess 2351 during the assembly and disassembly of the battery 235. For example, the limiting body 3241 can be a right-angled triangular prism structure or a roller-shaped structure.

[0171] In some embodiments, as shown in FIG19, the battery compartment 324 can be configured such that, when the battery 325 and the battery compartment 324 are in a disassembled state, a user can pass through the battery compartment 324 to operate the module separation handle 322. Specifically, the battery compartment 324 may have an opening corresponding to the position of the module separation handle 322, so that the module separation handle 322 can be exposed inside the battery compartment 324 through the opening. Thus, after the battery 325 is disassembled from the battery compartment 324, the user can pass through the battery compartment 324 to operate the module separation handle 322, thereby causing the limiting swing arm 321 to separate from the frame 311, thereby realizing the separation of the front wheel module 310 and the rear wheel module 320.

[0172] In some embodiments, as shown in FIG20, the bottom of the battery compartment 324 may be provided with an elastic mounting seat 326, and the elastic mounting seat 326 may be configured to provide a force to the battery 325 to detach the battery 325 from the battery compartment 324 when the battery 325 is installed in the battery compartment 324.

[0173] Specifically, with the battery 325 installed in the battery compartment 324, the elastic mounting base 326 is in a compressed state and has a certain energy storage capacity. Furthermore, when the user presses the button 3242, the elastic mounting base 326 releases its elastic potential energy at the instant the limiting body 3241 contracts, quickly disengaging the recessed portion 3251 of the battery 325 from the limiting body 3241. Afterwards, the user releases the button 3242, and the limiting body 3241 contacts the non-limiting area of ​​the battery 325 (i.e., the area other than the recessed portion 3251), allowing the battery 325 to be removed from the battery compartment 324.

[0174] In the above embodiments, the shape of the chassis 30 is not limited. For example, the projection of the chassis 30 along the top-bottom direction of the wheelchair can be U-shaped. In other words, the chassis 30 has a U-shaped structure when viewed from above. This not only ensures a reliable and simple connection between the two front wheels and the vehicle body structure, but also allows the internal connection structure to be hidden, resulting in a smooth, seamless outer surface and enhancing the wheelchair's aesthetic appeal.

[0175] As can be seen from the above, the wheelchair provided in this application embodiment includes a seat, a chassis, and a support arm. The seat and chassis are connected by the support arm, and at least one of the seat and chassis is mechanically and electrically connected to the support arm in a detachable manner. Furthermore, the electrical connection between the seat and the support arm is a wired or wireless connection, and the electrical connection between the chassis and the support arm is also a wired or wireless connection. This allows the wheelchair to be structurally disassembled into at least two parts, and the electrical disassembly and assembly of the wheelchair can be completed simultaneously during the mechanical disassembly and assembly process. Therefore, it not only reduces the space required for the wheelchair to be stored, making it easier to place in limited spaces such as the trunk of a vehicle, thus improving storage convenience, but also adapts to the complex wiring requirements of multifunctional wheelchairs, avoiding wire damage or tangling during the disassembly and assembly process, ensuring the stability and safety of the wheelchair's functions, and improving the user experience.

[0176] The wheelchair provided in the embodiments of this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A wheelchair, characterized in that, include: The system includes a seat, a chassis, and a support arm, wherein the seat and the chassis are connected via the support arm, and at least one of the seat and the chassis is mechanically and electrically connected to the support arm in a detachable manner; furthermore, the electrical connection between the seat and the support arm is either a wired or wireless connection, and the electrical connection between the chassis and the support arm is either a wired or wireless connection.

2. The wheelchair according to claim 1, characterized in that, The seat is provided with a seat connecting seat, which includes a first connector electrically connected to the connecting circuit board of the seat; the support arm is provided with a first support arm connecting seat, which includes a second connector electrically connected to the connecting circuit board of the support arm; the seat and the support arm are wired electrically connected through the seat connecting seat and the first support arm connecting seat; and when the seat and the support arm are in a connected state, the first connector and the second connector are connected to realize the wired electrical connection between the seat and the support arm.

3. The wheelchair according to claim 1, characterized in that, The chassis is provided with a chassis connecting seat, which includes a third connector electrically connected to the connecting circuit board of the chassis; the support arm is provided with a second support arm connecting seat, which includes a fourth connector electrically connected to the connecting circuit board of the support arm, and the chassis and the support arm are wired electrically connected through the chassis connecting seat and the second support arm connecting seat; and when the chassis and the support arm are in a connected state, the third connector and the fourth connector are connected to realize the wired electrical connection between the chassis and the support arm.

4. The wheelchair according to claim 1, characterized in that, The support arm includes a groove; the seat includes a push rod that is adapted to the groove, and the seat and the support arm are detachably connected through the groove and the push rod.

5. The wheelchair according to claim 4, characterized in that, The seat also includes a seat side removal handle and a seat side handle pivot. The seat side removal handle is rotatably connected to the seat side handle pivot, and the seat side removal handle is configured to drive the push rod to move when rotating around the seat side handle pivot.

6. The wheelchair according to claim 5, characterized in that, The seat also includes a fixed shaft and a swing arm. The fixed shaft fixes the seat side removal handle to the swing arm, and the seat side removal handle is specifically configured such that when it rotates around the pivot of the seat side handle, it drives the push rod to move through the swing arm.

7. The wheelchair according to claim 1, characterized in that, The seat includes a seat control board, and the seat control board is electrically connected to the seat's connection circuit board.

8. The wheelchair according to claim 1, characterized in that, The support arm includes a docking limiting part; the chassis includes a locking tongue, the locking tongue is adapted to the docking limiting part, and the chassis and the support arm are detachably connected through the locking tongue and the docking limiting part, the locking tongue having a locked state and an unlocked state; Furthermore, when the support arm is connected to the chassis, the docking limiting part is engaged in the locking tongue, and the locking tongue is in a locked state. When the support arm is detached from the chassis, the docking limiting part disengages from the locking tongue.

9. The wheelchair according to claim 8, characterized in that, The chassis also includes a chassis-side disassembly handle. The chassis-side disassembly handle and the locking tongue are respectively located on opposite sides of the mounting position of the support arm. The chassis-side disassembly handle is configured to unlock the locking tongue when subjected to a force in a specified direction.

10. The wheelchair according to claim 9, characterized in that, The chassis also includes a transmission rod, a chassis side handle pivot, and a transmission component. The chassis side detachable handle is fixedly connected to the transmission rod, the transmission rod is rotatably connected to the chassis side handle pivot, and the transmission rod is connected to the locking tongue through the transmission component. Specifically, the chassis side detachable handle is configured such that when subjected to a force in a specified direction, it drives the transmission rod to rotate around the chassis side handle pivot, and during the rotation of the transmission rod around the chassis side handle pivot, it drives the locking tongue to unlock through the transmission component.

11. The wheelchair according to claim 8, characterized in that, The support arm also includes a docking pivot; the chassis also includes a positioning part, which is adapted to the docking pivot, and the positioning part and the locking tongue are respectively located on opposite sides of the installation position of the support arm; Furthermore, when the support arm is connected to the chassis, the docking pivot is positioned at the positioning part, and when the latch changes from the locked state to the unlocked state, the support arm will rotate around the docking pivot under the force in a specified direction, and the docking limiting part will disengage from the latch, so that the support arm and the chassis change from the connected state to the disassembled state.

12. The wheelchair according to claim 1, characterized in that, The support arm includes a support arm control board, and the support arm control board is electrically connected to the connection circuit board of the support arm.

13. The wheelchair according to claim 1, characterized in that, The seat includes a seat body and a backrest, and the backrest is detachably connected to the seat body.

14. The wheelchair according to claim 13, characterized in that, The seat body includes a connecting frame and a limiting rod, the limiting rod being connected to the connecting frame; the backrest includes a first limiting part, the first limiting part being adapted to the limiting rod; Furthermore, when the backrest and the seat body are in a connected state, the limiting rod is engaged in the first limiting part, and when the backrest is subjected to a force in a direction away from the seat body, the limiting rod will disengage from the first limiting part, so that the backrest and the seat body change from a connected state to a disassembled state.

15. The wheelchair according to claim 14, characterized in that, The seat body also includes a pivot shaft connected to the connecting frame; the backrest also includes a second limiting part adapted to the pivot shaft. Furthermore, when the backrest and the seat body are connected, the pivot is engaged in the second limiting part, and when the backrest is subjected to a force in a direction away from the seat body, the backrest will rotate around the pivot, and the limiting rod will disengage from the first limiting part, so that the backrest and the seat body change from a connected state to a disassembled state.

16. The wheelchair according to claim 15, characterized in that, The first limiting part is provided with a slot and has a first inclined surface and a second inclined surface, wherein the first inclined surface is configured to guide the limiting rod to be engaged in the slot, and the second inclined surface is configured to guide the limiting rod to disengage from the slot.

17. The wheelchair according to claim 15, characterized in that, The connecting frame is provided with a first mounting hole and a second mounting hole. The opposite ends of the limiting rod are respectively installed in the first mounting hole and the second mounting hole, and the positions of the opposite ends of the limiting rod in the first mounting hole and the second mounting hole are adjustable so as to realize that the limiting rod is locked in the first limiting part, or to realize that the limiting rod is disengaged from the first limiting part. The seat body also includes a spring, one end of which is fixed to the connecting frame, and the other end of which is connected to the limiting rod. The spring is configured to apply a force to the limiting rod to prevent the limiting rod from disengaging from the first limiting part.

18. The wheelchair according to claim 1, characterized in that, The chassis includes a front wheel module and a rear wheel module, which are detachably connected.

19. The wheelchair according to claim 18, characterized in that, The front wheel module and the rear wheel module are electrically connected in a detachable manner, and the electrical connection between the front wheel module and the rear wheel module is either a wired electrical connection or a wireless connection.

20. The wheelchair according to claim 19, characterized in that, The front wheel module includes a front wheel connector, which includes a fifth connector electrically connected to a connection circuit board of the front wheel module; the rear wheel module includes a rear wheel connector, which includes a sixth connector electrically connected to a connection circuit board of the rear wheel module, and the front wheel module and the rear wheel module are wired electrically connected through the front wheel connector and the rear wheel connector; and when the front wheel module and the rear wheel module are in a connected state, the fifth connector and the sixth connector are connected to realize the wired electrical connection between the front wheel module and the rear wheel module.

21. The wheelchair according to claim 18, characterized in that, The front wheel module includes a frame; the rear wheel module includes a limiting swing arm, which is adapted to the frame. Furthermore, the front wheel module and the rear wheel module are detachably connected via the frame and the limiting swing arm.

22. The wheelchair according to claim 21, characterized in that, The rear wheel module also includes a module separation handle, which is fixedly connected to the limiting swing arm; Furthermore, when the front wheel module and the rear wheel module are in the connected state, the frame and the limiting swing arm are connected together by a snap-fit ​​mechanism, and the module separation handle is configured to: when subjected to a force in a specified direction, drive the frame and the limiting swing arm to disengage, so that the frame and the limiting swing arm change from the connected state to the disassembled state.

23. The wheelchair according to claim 22, characterized in that, The frame includes a front wheel side limiting rod; the rear wheel module also includes a rear wheel side limiting part, which is adapted to the front wheel side limiting rod; and when the front wheel module and the rear wheel module are connected, the rear wheel side limiting part and the limiting swing arm together clamp and fix the front wheel side limiting rod.

24. The wheelchair according to claim 22, characterized in that, The rear wheel module also includes a battery compartment and a battery, the battery of which is detachably installed in the battery compartment.

25. The wheelchair according to claim 24, characterized in that, The battery compartment is configured such that, when the battery and the battery compartment are in a detached state, a user can pass through the battery compartment to operate the module separation handle.

26. The wheelchair according to claim 24, characterized in that, The battery compartment is provided with an unlocking device, which includes a limiting body; the battery is provided with a recessed portion, which is adapted to the limiting body, and the battery and the battery compartment can be detachably installed through the recessed portion and the limiting body.

27. The wheelchair according to claim 26, characterized in that, The unlocking device further includes a button, an elastic body, and a linkage mechanism, wherein the button is disposed on the linkage mechanism, the linkage mechanism is connected to the limiting body, and the elastic body is connected to the linkage mechanism or the limiting body; Furthermore, when the battery and the battery compartment are in the installed state, the limiting part is engaged in the recessed part, and the button is configured such that when pressed, the limiting body is disengaged from the recessed part through the linkage mechanism, so that the battery and the battery compartment change from the installed state to the disassembled state, and the elastic body is stretched during the process of the limiting body disengaging from the recessed part.

28. The wheelchair according to claim 26, characterized in that, The end of the limiting body contacts the battery inside the battery compartment in a line contact or surface contact manner.

29. The wheelchair according to claim 26, characterized in that, The bottom of the battery compartment is provided with a resilient mounting base, and the resilient mounting base is configured to provide a force to the battery to detach the battery from the battery compartment when the battery is installed in the battery compartment.

30. The wheelchair according to claim 18, characterized in that, The front wheel module includes a front wheel electronic control board, and the front wheel electronic control board is electrically connected to the connection circuit board of the front wheel module; The rear wheel module includes a rear wheel electronic control board, and the rear wheel electronic control board is electrically connected to the connection circuit board of the rear wheel module.

31. The wheelchair according to claim 1, characterized in that, The projection of the chassis along the top and bottom direction of the wheelchair is U-shaped.

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