Foldable electric wheelchair

Abstract

A foldable electric wheelchair comprises a front support with a front wheel assembly mounted thereon, a rear support with a rear wheel assembly mounted thereon, and a back support, a first one of the three is provided with a handle between the left and right directions, a second one and a third one are respectively pivoted to the first one, or the second one and the third one are pivoted to each other and then pivoted to the first one, and a linkage mechanism is connected between the back support, the front support and the rear support, which makes the electric wheelchair have a folded state with the three being close to each other and an unfolded state with the three being away from each other, and a locking mechanism and an unlocking device are further provided to lock and unlock the linkage mechanism. When folding, the handle is held and the unlocking device is pressed to unlock the locking mechanism, the handle is lifted, and the three are close to each other under the action of gravity to complete the folding of the whole vehicle. In the scheme, the pivoting points of the ends of the supports are arranged in the area of the handle, the supports can be folded or unfolded synchronously after being unlocked, the unlocking device is located within the range of fingers when holding the handle with one hand, the handle is held to trigger the unlocking synchronously, and the folding is completed by the linkage under the action of gravity, the whole process is operated continuously with one hand, and the folding is convenient and labor-saving.

Description

Technical Field

[0001] This invention relates to a foldable electric wheelchair. Background Technology

[0002] A folding wheelchair is a wheelchair that can be unfolded when in use and folded up when not in use, reducing its storage and transportation volume. This provides convenience for users and their caregivers in daily storage and travel.

[0003] Currently, folding wheelchairs come in various folding structures, all aiming to reduce storage volume and improve portability through structural deformation. However, the unlocking and folding procedures differ significantly depending on the folding principle. For example, publication number CN211512373U discloses a folding wheelchair frame that can be unfolded or folded. In this design, to unlock, the operator must stand behind the wheelchair and simultaneously press the release button on the top of the second support rod (backrest frame) with both hands to unlock the locking mechanisms on both sides. Then, the second support rod (backrest frame) is tilted forward and downward. During this folding process, the release button on the top of the second support rod (backrest frame) gradually lowers to a position close to the front wheel assembly and the ground, forcing the operator to bend over and change position, or to change the direction of the wheelchair to facilitate folding and complete the entire operation. It is evident that this folding process involves multiple separate actions such as two-hand operation, bending over, and changing position, which cannot be completed continuously, resulting in a poor folding experience.

[0004] Therefore, providing a foldable electric wheelchair with a small folding size and convenient and smooth folding operation meets market demand. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a foldable electric wheelchair.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a foldable electric wheelchair, comprising a front support with a front wheel assembly mounted at the front, a rear support with a rear wheel assembly mounted at the bottom, and a backrest frame. A handle is provided between the left and right sides of the first of the three components: the rear part of the front support, the upper part of the rear support, and the lower part of the backrest frame. The second and third components are pivotally connected to the first, or, after the second and third are pivotally connected, one of them is then pivotally connected to the first. The foldable electric wheelchair also includes a linkage mechanism connecting the backrest frame, the front support, and the rear support. The linkage mechanism enables the electric wheelchair to have a folded state where the backrest frame, the front support, and the rear support move closer together simultaneously, and an unfolded state where the backrest frame and the rear support move away from the front support simultaneously. The foldable electric wheelchair also includes a locking mechanism for locking the linkage mechanism and an unlocking device for controlling the unlocking of the locking mechanism. When folding, after grasping the handle, pressing the unlocking device unlocks the locking mechanism, and then lifting the handle, the backrest frame, the front support, and the rear support move closer together under the action of gravity, causing the entire wheelchair to fold.

[0007] In some embodiments, the unlocking device is located in a circumferential direction with the center of the handle as the center, and within the reach of the operator's fingers when holding the handle with one hand, so that the unlocking device can be operated after holding the handle with one hand.

[0008] In some embodiments, the handle is rod-shaped, and the unlocking device includes an unlocking operation body, both of which are aligned in the length direction.

[0009] In some embodiments, the unlocking operation body is a flexible strip that does not have elasticity.

[0010] In some embodiments, the linkage includes a seat frame located above the front support, the rear of which is pivotally connected to the backrest frame via a third axis.

[0011] In some embodiments, the locking mechanism is located between the rear of the seat frame and the backrest frame, and the unlocking device is located at the rear of the seat frame or the lower part of the backrest frame, above or in front of the handle.

[0012] In some embodiments, the locking mechanism includes two side locking mechanisms, respectively disposed on both sides of the seat frame and the backrest frame. Each side locking mechanism includes a first locking part disposed on the backrest frame, a second locking part rotatably or slidably disposed on the seat frame, and an elastic element disposed between the second locking part and the seat frame to give the second locking part a tendency to pop out. When the locking mechanism is in the locked state, the first locking part and the second locking part are stably engaged, and the two second locking parts are respectively installed at both ends of the unlocking operation body.

[0013] In some embodiments, mounting seats are fixed to the rear ends of the front bracket, the lower end of the backrest frame is pivotally connected to the mounting seats via a first axis, the upper end of the rear bracket is pivotally connected to the mounting seats via a second axis, and the two sides of the handle are fixed between the left and right mounting seats.

[0014] In some embodiments, the linkage mechanism includes a first linkage mechanism comprising a seat frame disposed between the backrest frame and the front support, a second linkage mechanism disposed between the front support and the rear support, and a transmission rod rotatably connected between the first linkage mechanism and the second linkage mechanism.

[0015] In some embodiments, the first linkage mechanism includes a seat frame whose rear end is pivotally connected to the backrest frame via a third axis, and a seat link whose upper end is pivotally connected to the seat frame via a fourth axis. The seat link is pivotally connected to the front support via a fifth axis. The second linkage mechanism includes a bottom-front link whose front end is pivotally connected to the front support via a sixth axis, and a bottom-rear link whose rear end is pivotally connected to the rear support via a seventh axis. The rear end of the bottom-front link is pivotally connected to the front end of the bottom-rear link via an eighth axis. The upper end of the transmission rod is pivotally connected to the seat link via a ninth axis, and the lower end of the transmission rod is pivotally connected to the bottom-front link via a tenth axis.

[0016] In some embodiments, the linkage mechanism includes an armrest mechanism disposed between the backrest frame and the seat frame. The armrest mechanism includes an armrest frame located at the rear end above the seat frame and connected to the backrest frame via an eleventh axis pivot, an armrest link whose upper end is connected to the armrest frame via a twelfth axis pivot, and an armrest link whose lower end is connected to the seat frame via a thirteenth axis pivot.

[0017] The scope of this invention is not limited to technical solutions formed by specific combinations of the above-described technical features, but also includes other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this application.

[0018] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: The foldable electric wheelchair of the present invention centrally arranges the end pivot points of the front support, rear support, and backrest frame in the area where the handle is located. The three are connected by a linkage mechanism, and after unlocking, the supports can be simultaneously folded or unfolded. The unlocking device is located within the reach of the fingers of a single hand on the handle. When the user holds the handle, the unlocking is triggered simultaneously, and the user can lift upwards. With the help of the component's own weight and the linkage mechanism, the front support, rear support, and backrest frame can be easily folded. The entire process can be completed with one hand. The operator only needs to stand behind the wheelchair, slightly bend over, hold the handle, and simultaneously press the unlocking device. Then, the user can stand up and pull the wheelchair to fold it using gravity, making the operation convenient. Attached Figure Description

[0019] Appendix Figure 1 A side view of the wheelchair frame in its unfolded position (Example 1); Appendix Figure 2 A three-dimensional schematic diagram of the wheelchair frame in its unfolded position (Example 1); Appendix Figure 3 A side view of the wheelchair frame in its unfolded position (Example 2); Appendix Figure 4 For the wheelchair frame folding process Figure 1 (Example 2); Appendix Figure 5 For the wheelchair frame folding process Figure 2 (Example 2); Appendix Figure 6 A side view of the wheelchair frame in its folded position (Example 2); Appendix Figure 7 For the appendix Figure 1 AA-direction cross section; 11. Front bracket; 11a. Mounting base; 12. Rear bracket; 13. Backrest frame; 14. Handle assembly; 21. First linkage mechanism; 21a. Seat frame; 21b. Seat link; 21c. Transmission rod; 22. Second linkage mechanism; 22a. Bottom front linkage; 22b. Bottom rear linkage; 23. Handrail mechanism; 23a. Handrail frame; 23b. Handrail link; 24. Battery rack; 3. Locking mechanism; 31. First locking part; 32. Second locking part; 33. Elastic element; 4. Unlocking device; 41. Unlocking operating unit; 51. Front wheel assembly; 52. Rear wheel assembly; 61. Pedal; X1, First Axis; X2, Second Axis; X3, Third Axis; X4, Fourth Axis; X5, Fifth Axis; X6, Sixth Axis; X7, Seventh Axis; X8, Eighth Axis; X9, Ninth Axis; X10, Tenth Axis; X11, Eleventh Axis; X12, Twelfth Axis; X13, Thirteenth Axis. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. It should be noted that the front-back, left-right, and up-down directions described in this invention are the directions observed by the user while riding the foldable electric wheelchair. Example 1

[0021] As attached Figure 1 Appendix Figure 2 As shown, the foldable electric wheelchair provided by the present invention includes a front support 11 with a front wheel assembly 51 mounted at the front, a rear support 12 with a rear wheel assembly 52 mounted at the lower part, and a backrest frame 13. The front wheel assembly 51 is located at the lower front end of the front support 11 and is used to steer the wheelchair. A pedal 61 is also provided between the two front wheel assemblies 51 at the lower front part of the front support 11. The rear wheel assembly 52 is located at the lower end of the rear support 12 and is used to drive the wheelchair. In this embodiment, the rear wheel assembly 52 is a hub motor driven wheel.

[0022] Of the three components—the rear of the front support 11, the upper part of the rear support 12, and the lower part of the backrest frame 13—the first one has a handle 14 positioned between the left and right sides, and the second and third ones are pivotally connected to the first one.

[0023] In this embodiment, the rear of the front bracket 11 is a rotating base, that is, mounting seats 11a are fixed to both ends of the rear side of the front bracket 11. The rear bracket 12 and the backrest frame 13 are each independently pivotally connected to the front bracket 11, and the two hinge points do not interfere with each other. As shown in the attached figure Figure 1 , 2 As shown, the two lower ends of the backrest frame 13 are pivotally connected to the corresponding mounting seats 11a via a first axis X1, and the two upper ends of the rear support 12 are pivotally connected to the mounting seats 11a via a second axis X2. That is, the mounting seats 11a are fixed to the rear of the front support 11 and are part of the front support 11. Handlebars 14 are provided between the two mounting seats 11a; the backrest frame 13 and the rear support 12, as the second and third of the three, are pivotally connected to the mounting seats 11a of the front support 11. The handlebars 14 are rod-shaped and extend laterally between the left and right sides of the wheelchair, facilitating installation, stabilizing left and right rigidity, and providing a comfortable grip for the user.

[0024] Alternatively, without illustration, one of the three components—the front support 11, the upper part of the rear support 12, and the lower part of the backrest frame 13—can have a handle 14 positioned between its left and right sides. The second and third components are pivotally connected, and one of the latter two is then connected to the first pivot. For example, the lower part of the backrest frame 13 can be used as a rotating base, with mounting seats fixed to the left and right lower ends of the backrest frame 13. The upper end of the rear support is pivotally connected to the rear part of the front support, and the rear end of the front support is then rotatably connected to the mounting seats.

[0025] As attached Figure 1 As shown, the foldable electric wheelchair also includes a linkage mechanism connecting the backrest frame 13, the front support 11, and the rear support 12. This linkage mechanism includes a first linkage 21 comprising a seat frame 21a disposed between the backrest frame 13 and the front support 11; a second linkage 22 disposed between the front support 11 and the rear support 12; and a transmission rod 21c rotatably connected between the first linkage 21 and the second linkage 22.

[0026] Specifically, the first linkage mechanism 21 includes a seat frame 21a whose rear end is connected to the backrest frame 13 via a third axis X3 pivot, and a seat link 21b whose upper end is connected to the seat frame 21a via a fourth axis X4 pivot. The lower end of the seat link 21b is connected to the front support 11 via a fifth axis X5 pivot. The seat frame 21a is located above the front support 11 and is used to mount the seat cushion to support the user.

[0027] The second linkage mechanism 22 includes a bottom front link 22a whose front end is pivotally connected to the front support 11 via a sixth axis X6, and a bottom rear link 22b whose rear end is pivotally connected to the rear support 12 via a seventh axis X7. The rear end of the bottom front link 22a and the front end of the bottom rear link 22b are pivotally connected via an eighth axis X8.

[0028] The upper end of the transmission rod 21c is connected to the seat connecting rod 21b via the ninth axis X9 pivot, and the lower end of the transmission rod 21c is connected to the bottom front connecting rod 22a via the tenth axis X10 pivot.

[0029] Through the connection of the aforementioned linkage mechanism, the electric wheelchair has a folded state formed by the synchronized closing of the backrest frame 13, the front support 11, and the rear support 12, as shown in the attached figure. Figure 1 , 2 As shown, the backrest frame 13 and the rear support 12 are simultaneously extended away from the front support 11 to form an unfolded state. In the unfolded state, the seat frame 21a is approximately horizontal for the user to sit on; the backrest frame 13 extends backward and upward to provide back support for the user; the front support 11 and the rear support 12 are respectively supported on the front and rear sides to form a stable wheelchair structure.

[0030] Specifically, in the first linkage mechanism 21, the backrest frame 13, seat frame 21a, seat link 21b, and front support 11 constitute the first four-bar linkage, which is formed by four rotating shafts: the first shaft X1, the third shaft X3, the fourth shaft X4, and the fifth shaft X5. When the backrest frame 13 rotates forward around the first shaft X1, the seat frame 21a moves forward and closes with the seat link 21b, and the two are retracted between the backrest frame 13 and the front support 11.

[0031] In the second linkage mechanism 22, the front support 11, the bottom front link 22a, the bottom rear link 22b, and the rear support 12 constitute a second four-bar linkage mechanism, which is formed by four rotating shafts: the second shaft X2, the sixth shaft X6, the seventh shaft X7, and the eighth shaft X8. The upper end of the transmission rod 21c is connected to the seat link 21b via the ninth shaft X9, which is located above the fifth shaft X5. The lower end of the transmission rod 21c is connected to the bottom front link 22a via the tenth shaft X10, so that the first linkage mechanism 21 and the second linkage mechanism 22 are linked and linked. When the seat link 21b moves, the transmission rod 21c drives the bottom front link 22a to rotate around the sixth shaft X6. The bottom front link 22a drives the bottom rear link 22b to move forward via the eighth shaft X8. The bottom rear link 22b drives the rear support 12 to rotate around the second shaft X2 towards the front support 11 via the seventh shaft X7, thereby realizing that the rear wheel assembly 52 retracts forward along with the rear support 12.

[0032] This embodiment also includes an armrest mechanism 23, which links the armrest frame 23a to the folding action of the wheelchair, so that the armrest frame 23a can automatically move in conjunction with the folding and unfolding of the wheelchair, without the need to operate the armrest separately to fold it, further improving the convenience of use.

[0033] As attached Figure 2 The foldable electric wheelchair also includes a locking mechanism 3 for locking the linkage mechanism and an unlocking device 4 for controlling the unlocking of the locking mechanism 3. The locking mechanism 3 locks the linkage mechanism in the unfolded state to ensure safety during use. It can be installed in multiple locations. In this embodiment, it is installed between the rear of the seat frame 21a and the backrest frame 13 to lock the linkage mechanism in the unfolded state.

[0034] The locking mechanism 3 includes two side locking mechanisms, located on the left and right sides respectively. Each side locking mechanism is controlled by an unlocking device. The unlocking device is positioned within easy reach of the fingers holding the handle with one hand, and unlocking is triggered simultaneously when the user grips the handle.

[0035] The locking mechanism 3 is the installation position for the matching unlocking device. In this embodiment, the two side locking mechanisms are respectively located at the left and right ends of the seat frame 21a and the lower left and right sides of the backrest frame 13. (See attached...) Figure 7As shown, each side locking mechanism includes a first locking part 31 mounted on the backrest frame 13, a second locking part 32 rotatably or slidably mounted on the seat frame 21a, and an elastic element 33 disposed between the second locking part 32 and the seat frame 21a. The elastic element provides a pop-out tendency for the second locking part 32 to move towards the first locking part 31, so that the second locking part 32 can automatically and stably engage with the first locking part 31 when it is fully extended, achieving automatic locking. Preferably, the first locking part 31 is a lock hole mounted on the backrest frame 13, the second locking part 32 is a locking pin slidably mounted on the rear fixed seat of the seat frame 21a, and the elastic element 33 is a compression spring disposed between the locking pin and the fixed seat. When the locking mechanism 3 is in the locked state, the first locking part 31 and the second locking part 32 are stably engaged, that is, the locking pin is inserted into the lock hole, locking the relative position of the seat frame 21a and the backrest frame 13, thereby locking the entire linkage mechanism.

[0036] The two second locking parts 32 on the left and right, i.e. the locking pins, are controlled by the unlocking device respectively.

[0037] The unlocking device 4 is located at the rear of the seat frame 21a or the lower part of the backrest frame 13, and above the handle 14. In this embodiment, as shown in the attached... Figure 2 , 7 As shown, the unlocking device 4 includes an unlocking operation body 41, which is arranged along the length direction of the handle 14, with both having the same length direction. The unlocking device 4 is located in the circumferential direction with the center of the handle 14 as the center, and is within the reach of the operator's fingers when holding the handle 14 with one hand. In this embodiment, for the sake of simple design and convenient control, the unlocking operation body 41 is a flexible strip without elasticity, such as a steel wire rope or braided rope. One end of it is connected to the second locking part 32 on the left, and the other end is connected to the second locking part 32 on the right, with the middle part arranged along the length direction of the handle 14. When the user pulls the unlocking operation body 41, the second locking parts 32 on both sides are driven synchronously, realizing the simultaneous unlocking of the locking mechanisms on both sides.

[0038] When folding, the user can hold the handle 14 upwards with one hand, touch the unlocking mechanism 41 with their fingers and pull it. This causes the second locking parts 32 on both sides to slide against the elastic force of the elastic element 33, disengaging the second locking parts 32 from the first locking parts 31, thus unlocking the locking mechanisms 3 on both sides. Subsequently, the user can lift the handle 14, and under the action of gravity, the backrest 13, front support 11, and rear support 12 move closer together through the linkage mechanism, automatically completing the folding of the entire vehicle. Throughout the folding process, the user only needs to use one hand to complete the continuous actions of gripping, pressing, and lifting, making the folding operation smooth.

[0039] Of course, after the locking mechanism 3 is unlocked, the user can also push the backrest frame 13 forward to achieve faster folding, but the entire folding process can be completed independently by pulling the handle 14 with one hand. After folding, the front wheel assembly 51 and the rear wheel assembly 52 are folded under the front support 11 and can touch the ground, resulting in a smaller folded size.

[0040] This solution places the unlocking device 4 close to the handle 14, so that after the user holds the handle 14 and unlocks it, they can simply pull it up to complete the folding using gravity, without having to change the position of their hands or find other points of force, making the operation more convenient and effortless.

[0041] When unfolded, the user pulls up the backrest frame 13, and the supports unfold away from each other. When unfolded in place, the locking mechanism 3 automatically locks under the action of the elastic element, keeping the wheelchair in the unfolded state, making it safe and reliable to use.

[0042] As attached Figure 1 , 2 As shown in Figures 7 and 8, a battery holder 24 for placing batteries is fixed below the seat frame 21a. Example 2

[0043] As attached Figure 3 To be continued Figure 6 As shown, the main difference between this embodiment and Embodiment 1 lies in the connection position of the transmission rod 21c and the seat connecting rod 21b. The seat connecting rod 21b extends downward from the fifth axis X5 to form an extension section. The upper end of the transmission rod 21c is pivotally connected to the extension section via the ninth axis X9, which is located below the fifth axis X5. The folding principle is the same. (See attached...) Figure 3 -Appendix Figure 6 As shown, during folding, the user holds the handle 14 and presses the unlocking device 4 to unlock the locking mechanism 3, then lifts the handle 14. Under gravity, the backrest frame 13, front support 11, and rear support 12 move closer together. During this process, the backrest frame 13 rotates forward around its pivot point with the front support 11, causing the seat frame 21a to move forward and its rear end to rise. The seat frame 21a drives the transmission rod 21c to move via the seat connecting rod 21b. The transmission rod 21c drives the bottom front connecting rod 22a and bottom rear connecting rod 22b to move, thereby causing the rear support 12 to move closer to the front support 11. At the same time, the armrest frame 23a folds down synchronously with the backrest frame 13 and the seat frame 21a under the transmission of the armrest mechanism 23. Finally, the entire vehicle is folded as shown in the attached figure. Figure 6 The folded state shown.

[0044] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A foldable electric wheelchair, characterized in that: The device includes a front bracket (11) with a front wheel assembly (51) mounted at the front, a rear bracket (12) with a rear wheel assembly (52) mounted at the bottom, and a backrest frame (13). A handle (14) is provided between the left and right sides of the first of the three components: the rear of the front bracket (11), the upper part of the rear bracket (12), and the lower part of the backrest frame (13). The second and third components are pivotally connected to the first component, or, after the second and third components are pivotally connected, one of them is then connected to the first pivot. The foldable electric wheelchair also includes a linkage mechanism connecting the backrest frame (13), the front support (11), and the rear support (12). This linkage mechanism enables the electric wheelchair to have a folded state where the backrest frame (13), the front support (11), and the rear support (12) simultaneously move closer together, and an unfolded state where the backrest frame (13) and the rear support (12) simultaneously move away from the front support (11). The foldable electric wheelchair also includes a locking mechanism (3) for locking the linkage mechanism and an unlocking device (4) for controlling the unlocking of the locking mechanism (3). When folding, after holding the handle (14), press the unlocking device (4) to unlock the locking mechanism (3), and then lift the handle (14). Under the action of gravity, the backrest frame (13), the front support (11) and the rear support (12) move closer to each other, causing the whole vehicle to fold.

2. The foldable electric wheelchair according to claim 1, characterized in that: The unlocking device (4) is located in the circumferential direction with the center of the handle (14) as the center, and is within the reach of the fingers when the operator holds the handle (14) with one hand, so that the unlocking device (4) can be operated after holding the handle (14) with one hand.

3. The foldable electric wheelchair according to claim 1, characterized in that: The handle (14) is rod-shaped, and the unlocking device (4) includes an unlocking operation body (41), both of which are aligned in length.

4. The foldable electric wheelchair according to claim 3, characterized in that: The unlocking operation body (41) is a flexible strip that does not have elasticity.

5. The foldable electric wheelchair according to claim 3, characterized in that: The linkage mechanism includes a seat frame (21a) located above the front support (11), and the rear of the seat frame (21a) is connected to the backrest frame (13) via a third axis pivot.

6. The foldable electric wheelchair according to claim 5, characterized in that: The locking mechanism (3) is located between the rear of the seat frame (21a) and the backrest frame (13), and the unlocking device (4) is located at the rear of the seat frame (21a) or the lower part of the backrest frame (13), and above or in front of the handle (14).

7. The foldable electric wheelchair according to claim 6, characterized in that: The locking mechanism (3) includes two side locking mechanisms, which are respectively disposed on the two sides of the seat frame (21a) and the backrest frame (13). Each side locking mechanism includes a first locking part (31) disposed on the backrest frame (13), a second locking part (32) disposed on the seat frame (21a) by rotation or sliding, and an elastic element disposed between the second locking part (32) and the seat frame (21a) to give the second locking part (32) a pop-out tendency. When the locking mechanism (3) is in the locked state, the first locking part (31) and the second locking part (32) are stably engaged, and the two second locking parts (32) are respectively installed at both ends of the unlocking operation body (41).

8. The foldable electric wheelchair according to claim 1, characterized in that: The front bracket (11) has mounting seats (11a) fixed at both ends of its rear side. The lower end of the backrest frame (13) is pivotally connected to the mounting seat (11a) via a first shaft (X1). The upper end of the rear bracket (12) is pivotally connected to the mounting seat (11a) via a second shaft (X2). The handle (14) is fixed on both sides between the left and right mounting seats (11a).

9. The foldable electric wheelchair according to claim 1, characterized in that: The linkage mechanism includes a first linkage mechanism (21) comprising a seat frame (21a) disposed between the backrest frame (13) and the front support (11), a second linkage mechanism (22) disposed between the front support (11) and the rear support (12), and a transmission rod (21c) rotatably connected between the first linkage mechanism (21) and the second linkage mechanism (22).

10. The foldable electric wheelchair according to claim 9, characterized in that: The first linkage mechanism (21) includes a seat frame (21a) whose rear end is pivotally connected to the backrest frame (13) via a third axis (X3), and a seat link (21b) whose upper end is pivotally connected to the seat frame (21a) via a fourth axis (X4). The seat link (21b) is pivotally connected to the front support (11) via a fifth axis (X5). The second linkage mechanism (22) includes a bottom front link whose front end is pivotally connected to the front support (11) via a sixth axis (X6). The rod (22a) and the rear end of the bottom rear connecting rod (22b) are pivotally connected to the rear support (12) via the seventh axis (X7). The rear end of the bottom front connecting rod (22a) is pivotally connected to the front end of the bottom rear connecting rod (22b) via the eighth axis (X8). The upper end of the transmission rod (21c) is pivotally connected to the seat connecting rod (21b) via the ninth axis (X9). The lower end of the transmission rod (21c) is pivotally connected to the bottom front connecting rod (22a) via the tenth axis (X10).

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