Multifunctional intelligent wheelchair

Abstract

The utility model relates to the technical field of wheelchairs, in particular to a multifunctional intelligent wheelchair. When the wheelchair is specifically used, an old person sits on the cushion piece, then the controller is operated to control the first lifting pipe and the second lifting pipe to synchronously ascend so that the cushion piece can be higher than the bed surface, then the controller is operated to control the base to move so that the wheelchair can be close to a bed, and finally the cushion piece can be located on the bed surface. Then the first lifting pipe and the second lifting pipe are controlled to descend synchronously, and the cushion piece is finally attached to the bed surface; then, the supporting back plate can be opened, and the connecting belt part is detached from the first cross arm and the second cross arm, so that the cushion part can be separated from the multifunctional intelligent wheelchair; at the moment, the old people are transferred to the bed surface, the whole operation process is more convenient and labor-saving, and the burden of nursing personnel and the safety risk of the old people getting on and off the wheelchair are also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchairs, in particular to a multifunctional intelligent wheelchair. Background Art

[0002] With the aging population, the market demand for wheelchairs is growing. However, existing wheelchair designs are not sufficient for the elderly to safely transfer from bed to bed and to use the toilet. In particular, some elderly people or those with limited mobility still require assistance from family members or caregivers to transfer from their wheelchairs to bed. This is not only time-consuming and labor-intensive, but also increases the burden on caregivers and the safety risks of the elderly transferring from wheelchairs to bed. Therefore, there is an urgent need for a wheelchair that can more conveniently transfer the elderly to bed. Summary of the Invention

[0003] The main purpose of the utility model is to provide a multifunctional intelligent wheelchair, aiming to solve the current problem of urgently needing a wheelchair that can more conveniently transfer the elderly to the bed.

[0004] In order to achieve the above purpose, the technical solution proposed by the utility model is:

[0005] A multifunctional intelligent wheelchair comprises a base, a first support frame arm, a second support frame arm, a first lifting tube, a second lifting tube, a first transverse arm, a second transverse arm, a first vertical arm, a second vertical arm, a seat cushion, a connecting belt component, a first drive assembly, a support backboard, a second drive assembly and a controller; the first support frame arm and the second support frame arm are both vertically arranged on the base; the first lifting tube is vertically slidably embedded in the first support frame arm, and the second lifting tube is vertically slidably embedded in the second support frame arm; the first transverse arm is vertically connected to the first lifting tube; the second transverse arm is vertically connected to the second lifting tube; the first vertical arm is vertically connected to an end of the first transverse arm away from the first lifting tube; the second vertical arm is vertically connected to an end of the second transverse arm away from the second lifting tube; the support backboard is rotatably connected to the second vertical arm; the seat cushion is detachably connected to the first transverse arm and the second transverse arm via the connecting belt component; the controller is used to control the first drive assembly to drive the first lifting tube and the second lifting tube to rise and fall synchronously; the controller is also used to control the second drive assembly to drive the base to move; a suspended space is formed between the seat cushion and the base.

[0006] Preferably, the first drive assembly includes a first screw rod, a second screw rod and a first drive component; the first support frame arm and the second support frame arm are parallel to each other; the first support frame arm and the second support frame arm are hollow inside; the first screw rod is rotatably arranged inside the first support frame arm; the second screw rod is rotatably arranged inside the first support frame arm; the interior of the first lifting tube and the interior of the second lifting tube are both hollow; a first nut is fixedly provided inside the first lifting tube; a second nut is fixedly provided inside the second lifting tube; the first screw rod is fitted and passed through the first nut; the second screw rod is fitted and passed through the second nut; the first screw rod is parallel to the second screw rod; the first drive component is used to drive the first screw rod and the second screw rod to rotate synchronously and at the same speed.

[0007] Preferably, the top of the first support frame arm is open, and the first lifting tube extends upward from the first support frame arm; the top of the second support frame arm is open, and the second lifting tube extends upward from the second support frame arm; the first screw rod and the second screw rod are of the same size; the first lifting tube and the second lifting tube are of the same size; the first support frame arm and the second support frame arm are of the same size; the first horizontal arm and the second horizontal arm are parallel to and directly opposite to each other; the first vertical arm and the second vertical arm are parallel to and directly opposite to each other.

[0008] Preferably, it also includes a first grip arm and a second grip arm; the first grip arm is connected to the first vertical arm; the second grip arm is connected to the second vertical arm; the outer wall of the first lifting tube is in sliding contact with the inner wall of the first support frame arm; the outer wall of the second lifting tube is in sliding contact with the inner wall of the second support frame arm.

[0009] Preferably, the first driving component includes a first rotating shaft, a first bevel gear, a second bevel gear, a third bevel gear, a fourth bevel gear and a first motor; the first rotating shaft is rotatably connected to the base; the first rotating shaft is perpendicular to the first screw rod; the first bevel gear is coaxially connected to the bottom of the first screw rod; the second bevel gear is coaxially connected to one end of the first rotating shaft; the first bevel gear and the second bevel gear are meshed; the third bevel gear is coaxially connected to the bottom of the second screw rod; the third bevel gear is coaxially connected to the other end of the first rotating shaft; the third bevel gear and the fourth bevel gear are meshed; the first motor is arranged on the base; the first motor is used to drive the first rotating shaft to rotate; the controller is also used to control the start and stop of the first motor.

[0010] Preferably, it also includes a first limiting rod and a first sleeve; the first sleeve is connected to the first support frame arm, and the first sleeve is parallel to the first support frame arm; the first limiting rod is vertically connected to the middle part of the first cross arm; the first limiting rod is slidably arranged in the first sleeve.

[0011] Preferably, it also includes a second limiting rod and a second sleeve; the second sleeve is connected to the second support frame arm, and the second sleeve is parallel to the second support frame arm; the second limiting rod is vertically connected to the middle part of the second cross arm; the second limiting rod is slidably passed through the second sleeve.

[0012] Preferably, it also includes a latch rod and a latch buckle; the latch buckle is arranged on the first vertical arm; the latch rod is arranged on the support backboard; the support backboard can be rotated to engage with the first vertical arm; when the support backboard engages with the first vertical arm, the latch rod can be inserted into the latch buckle to lock the support backboard.

[0013] Preferably, the seat cushion component includes a seat cushion soft plate, a gear soft plate and a seat cushion frame; the seat cushion soft plate is arranged on the seat cushion frame; the seat cushion frame is a rectangular frame; a notch is opened in the middle of the seat cushion soft plate; the gear soft plate can be fitted into the notch; the connecting belt component is a buckle strap; the seat cushion frame includes a first frame arm and a second frame arm that are parallel and opposite to each other; the number of the buckle straps is at least 4; at least 2 of the buckle straps are arranged between the first frame arm and the first cross arm, and at least 2 of the buckle straps are arranged between the second frame arm and the second cross arm.

[0014] Preferably, the second driving assembly includes a first roller, a second roller, a third roller, a fourth roller, a second motor and a third motor; the first roller, the second roller, the third roller and the fourth roller are all rotatably connected to the base; the first roller and the second roller are opposite to each other; the third roller and the fourth roller are opposite to each other; the first roller is closer to the first support frame arm than the third roller; the second roller is closer to the second support frame arm than the fourth roller; the second motor is connected to the first roller through a first reducer; the third motor is connected to the second roller through a second reducer; the controller is also used to control the start and stop of the second motor and the third motor.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] The multifunctional intelligent wheelchair proposed by the present invention can transfer the elderly to the bed more conveniently. When in use, the elderly sit on the seat cushion, and then operate the controller to control the first lifting tube and the second lifting tube to rise synchronously so that the seat cushion is higher than the bed surface. Thereafter, the base can be controlled to move by operating the controller to bring the wheelchair closer to the bed, and finally the seat cushion is above the bed surface. Thereafter, the first lifting tube and the second lifting tube are controlled to descend synchronously, and finally the seat cushion is attached to the bed surface. Then, the support backboard can be opened, and the connecting belt parts can be removed from the first cross arm and the second cross arm respectively, so that the seat cushion can be separated from the multifunctional intelligent wheelchair. Subsequently, the multifunctional intelligent wheelchair body can be pushed away. At this time, the elderly has been transferred to the bed surface. The entire operation process is more convenient and labor-saving, and also reduces the burden on caregivers and the safety risks of the elderly getting on and off the wheelchair. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 This is a structural diagram of an embodiment of the multifunctional intelligent wheelchair proposed by the present invention;

[0019] Figure 2 This is a partial structural diagram of an embodiment of the multifunctional intelligent wheelchair proposed by the present invention.

[0020] Description of reference numerals:

[0021] 110. First support frame arm; 120. First lifting tube; 130. First horizontal arm; 140. First vertical arm; 150. Support backboard; 160. First grip arm; 170. Buckle strap; 180. Cushion frame; 190. First frame arm; 210. Cushion soft board; 220. First sleeve; 230. First limiting rod; 240. Base; 250. First roller; 260. Third roller; 270. Suspension space; 280. Footrest; 290. Second support frame arm; 310. Second lifting tube; 320. First screw rod; 330. Second screw rod; 340. First rotating shaft; 350. First motor; 360. First bevel gear; 370. Second bevel gear; 380. Third bevel gear; 390. Fourth bevel gear.

[0022] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

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

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0026] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0027] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0028] The utility model provides a multifunctional intelligent wheelchair.

[0029] As attached Figure 1 -Attached Figure 2As shown, in one embodiment of a multifunctional intelligent wheelchair proposed by the present invention, the multifunctional intelligent wheelchair includes a base 240, a first support frame arm 110, a second support frame arm 290, a first lifting tube 120, a second lifting tube 310, a first cross arm 130, a second cross arm (not shown), a first vertical arm 140, a second vertical arm (not shown), a cushion member, a connecting belt member, a first drive assembly, a support backboard 150, a second drive assembly and a controller (such as a button controller); the first support frame arm 110 and the second support frame arm 290 are both vertically arranged on the base 240; the first lifting tube 120 is vertically slidably embedded in the first support frame arm 110, and the second lifting tube 310 is vertically slidably embedded in the second support frame arm 290; the first cross arm 130 is vertically connected to the first lifting tube 120; the second cross arm is vertically connected to the second lifting tube 310; the first vertical arm 140 is vertically connected to the end of the first cross arm 130 away from the first lifting tube 120; The second vertical arm is vertically connected to the end of the second horizontal arm away from the second lifting tube 310; the support backboard 150 is rotatably connected to the second vertical arm; the cushion part is detachably connected to the first horizontal arm 130 and the second horizontal arm through a connecting belt part; the controller is used to control the first drive assembly to drive the first lifting tube 120 and the second lifting tube 310 to rise and fall synchronously; the controller is also used to control the second drive assembly to drive the base 240 to move; an empty space 270 is formed between the cushion part and the base 240 (by providing the empty space 270, the edge of the bed can extend into the empty space 270, that is, the base 240 can extend into the lower part of the bed, so that the wheelchair can be closer to the bed).

[0030] The multifunctional intelligent wheelchair proposed by the present invention can transfer the elderly to the bed more conveniently. When in use, the elderly sit on the seat cushion, and then operate the controller to control the first lifting tube 120 and the second lifting tube 310 to rise synchronously so that the seat cushion is higher than the bed surface. Then, the base 240 can be controlled to move by operating the controller to bring the wheelchair closer to the bed, and finally the seat cushion is above the bed surface. Then, the first lifting tube 120 and the second lifting tube 310 are controlled to descend synchronously, and the seat cushion is finally attached to the bed surface. Then, the support backboard 150 can be opened, and the connecting belt parts can be removed from the first cross arm 130 and the second cross arm respectively, so that the seat cushion can be separated from the multifunctional intelligent wheelchair. Subsequently, the multifunctional intelligent wheelchair body can be pushed away. At this time, the elderly have been transferred to the bed surface. The entire operation process is more convenient and labor-saving, and also reduces the burden on caregivers and the safety risks of the elderly getting on and off the wheelchair.

[0031] In addition, the first drive assembly includes a first screw rod 320, a second screw rod 330 and a first drive component; the first support frame arm 110 and the second support frame arm 290 are parallel to each other; the first support frame arm 110 and the second support frame arm 290 are hollow; the first screw rod 320 is rotatably arranged inside the first support frame arm 110; the second screw rod 330 is rotatably arranged inside the first support frame arm 110; the interior of the first lifting tube 120 and the interior of the second lifting tube 310 are both hollow; a first nut (not shown) is fixedly arranged inside the first lifting tube 120; a second nut (not shown) is fixedly arranged inside the second lifting tube 310; the first screw rod 320 is cooperated to pass through the first nut; the second screw rod 330 is cooperated to pass through the second nut; the first screw rod 320 is parallel to the second screw rod 330; the first drive component is used to drive the first screw rod 320 and the second screw rod 330 to rotate synchronously and at the same speed. By driving the first screw rod 320 and the second screw rod 330 to rotate synchronously and at the same speed, the first screw rod 320 drives the first lifting tube 120 to move vertically up and down, and the second screw rod 330 drives the second lifting tube 310 to move vertically up and down.

[0032] At the same time, the top of the first support frame arm 110 is open, and the first lifting tube 120 extends upward from the first support frame arm 110; the top of the second support frame arm 290 is open, and the second lifting tube 310 extends upward from the second support frame arm 290; the first screw rod 320 and the second screw rod 330 are of the same size; the first lifting tube 120 and the second lifting tube 310 are of the same size; the first support frame arm 110 and the second support frame arm 290 are of the same size; the first horizontal arm 130 and the second horizontal arm are parallel to and opposite to each other; the first vertical arm 140 and the second vertical arm are parallel to and opposite to each other.

[0033] In addition, the multifunctional intelligent wheelchair further includes a first grip arm 160 and a second grip arm (not shown); the first grip arm 160 is connected to the first vertical arm 140; the second grip arm is connected to the second vertical arm; the outer wall of the first lifting tube 120 is in sliding contact with the inner wall of the first support frame arm 110; the outer wall of the second lifting tube 310 is in sliding contact with the inner wall of the second support frame arm 290.

[0034] Specifically, the first driving component includes a first rotating shaft 340, a first bevel gear 360, a second bevel gear 370, a third bevel gear 380, a fourth bevel gear 390 and a first motor 350; the first rotating shaft 340 is rotatably connected to the base 240; the first rotating shaft 340 is perpendicular to the first screw rod 320; the first bevel gear 360 is coaxially connected to the bottom of the first screw rod 320; the second bevel gear 370 is coaxially connected to one end of the first rotating shaft 340; the first bevel gear 360 and the second bevel gear 370 are meshed; the third bevel gear 380 is coaxially connected to the bottom of the second screw rod 330; the third bevel gear 380 is coaxially connected to the other end of the first rotating shaft 340; the third bevel gear 380 and the fourth bevel gear 390 are meshed; the first motor 350 is arranged on the base 240; the first motor 350 is used to drive the first rotating shaft 340 to rotate; the controller is also used to control the start and stop of the first motor 350.

[0035] The first bevel gear 360 , the second bevel gear 370 , the third bevel gear 380 and the fourth bevel gear 390 are all of the same size, so that when the first motor 350 drives the first rotating shaft 340 to rotate, the first screw rod 320 and the second screw rod 330 can be driven to rotate synchronously and at the same speed.

[0036] In addition, the multifunctional intelligent wheelchair further includes a first limiting rod 230 and a first sleeve 220. The first sleeve 220 is connected to the first support frame arm 110 and is parallel to the first support frame arm 110. The first limiting rod 230 is perpendicularly connected to the middle portion of the first cross arm 130 and is slidably disposed through the first sleeve 220. The multifunctional intelligent wheelchair further includes a second limiting rod (not shown) and a second sleeve (not shown). The second sleeve is connected to the second support frame arm 290 and is parallel to the second support frame arm 290. The second limiting rod is perpendicularly connected to the middle portion of the second cross arm and is slidably disposed through the second sleeve. Through the above technical solution, the first and second lifting tubes 120 and 310 can be limited in position, so that the first lifting tube 120 can only be raised and lowered vertically under the action of the first screw rod 320 and cannot rotate; and the second lifting tube 310 can only be raised and lowered vertically under the action of the second screw rod 330 and cannot rotate.

[0037] The multifunctional intelligent wheelchair also includes a latch rod (not shown) and a latch buckle (not shown); the latch buckle is disposed on the first vertical arm 140; the latch rod is disposed on the support back plate 150; the support back plate 150 can rotate to engage the first vertical arm 140; when the support back plate 150 engages the first vertical arm 140, the latch rod can cooperate with the latch buckle to lock the support back plate 150. The base 240 is also provided with a footrest 280 for placing the user's feet.

[0038] In addition, the seat cushion comprises a seat cushion panel 210, a shift panel (not shown), and a seat cushion frame 180. The seat cushion panel 210 is mounted on the seat cushion frame 180, which is a rectangular frame. A notch (not shown) is provided in the middle of the seat cushion panel 210. The shift panel can fit into the notch. The connecting strap is a buckle strap 170. The seat cushion frame 180 comprises a first frame arm 190 and a second frame arm that are parallel and opposite to each other. There are at least four buckle straps 170. At least two buckle straps 170 are provided between the first frame arm 190 and the first cross arm 130, and at least two buckle straps 170 are provided between the second frame arm and the second cross arm. The buckle straps 170 allow the seat cushion to be completely detached from the chair, allowing it to be transferred to a bed. The notch in the middle of the seat cushion panel 210 facilitates toileting.

[0039] Meanwhile, the second drive assembly includes a first roller 250, a second roller (not shown), a third roller 260, a fourth roller (not shown), a second motor (not shown), and a third motor (not shown). The first roller 250, the second roller, the third roller 260, and the fourth roller are all rotatably connected to the base 240. The first roller 250 and the second roller are opposite each other. The third roller 260 and the fourth roller are opposite each other. The first roller 250 is closer to the first support frame arm 110 than the third roller 260. The second roller is closer to the second support frame arm 290 than the fourth roller. The second motor is driven and connected to the first roller 250 via a first reducer. The third motor is driven and connected to the second roller via a second reducer. The controller is also used to control the start and stop of the second and third motors. Through the above technical solution, the structure and function of the second drive assembly are improved. The user can control the start and stop of the second and third motors by operating the controller, thereby moving the wheelchair.

[0040] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A multifunctional intelligent wheelchair, characterized in that: The invention comprises a base, a first support frame arm, a second support frame arm, a first lifting tube, a second lifting tube, a first transverse arm, a second transverse arm, a first vertical arm, a second vertical arm, a cushion member, a connecting belt member, a first drive assembly, a support backboard, a second drive assembly and a controller; the first support frame arm and the second support frame arm are both vertically arranged on the base; the first lifting tube is vertically slidably embedded in the first support frame arm, and the second lifting tube is vertically slidably embedded in the second support frame arm; the first transverse arm is vertically connected to the first lifting tube; the second transverse arm is vertically connected to the second lifting tube; the first vertical arm is vertically connected to an end of the first transverse arm away from the first lifting tube; the second vertical arm is vertically connected to an end of the second transverse arm away from the second lifting tube; the support backboard is rotatably connected to the second vertical arm; the cushion member is detachably connected to the first transverse arm and the second transverse arm through the connecting belt member; the controller is used to control the first drive assembly to drive the first lifting tube and the second lifting tube to rise and fall synchronously; the controller is also used to control the second drive assembly to drive the base to move; a suspended space is formed between the cushion member and the base.

2. The multifunctional intelligent wheelchair according to claim 1, characterized in that: The first drive assembly includes a first screw rod, a second screw rod and a first drive component; the first support frame arm and the second support frame arm are parallel to each other; The first support frame arm and the second support frame arm are hollow inside; the first screw rod is rotatably arranged inside the first support frame arm; the second screw rod is rotatably arranged inside the first support frame arm; the interior of the first lifting tube and the interior of the second lifting tube are both hollow; a first nut is fixedly arranged inside the first lifting tube; a second nut is fixedly arranged inside the second lifting tube; the first screw rod is fitted and passed through the first nut; the second screw rod is fitted and passed through the second nut; the first screw rod is parallel to the second screw rod; the first driving component is used to drive the first screw rod and the second screw rod to rotate synchronously and at the same speed.

3. The multifunctional intelligent wheelchair according to claim 2, characterized in that: The top of the first support frame arm is open, and the first lifting tube extends upward from the first support frame arm; the top of the second support frame arm is open, and the second lifting tube extends upward from the second support frame arm; the first screw rod and the second screw rod have the same size; The first lifting tube and the second lifting tube have the same size; The first support frame arm and the second support frame arm have the same size; The first horizontal arm and the second horizontal arm are parallel to and directly opposite to each other; the first vertical arm and the second vertical arm are parallel to and directly opposite to each other.

4. The multifunctional intelligent wheelchair according to claim 2, characterized in that: It also includes a first grip arm and a second grip arm; the first grip arm is connected to the first vertical arm; the second grip arm is connected to the second vertical arm; the outer wall of the first lifting tube is in sliding contact with the inner wall of the first support frame arm; the outer wall of the second lifting tube is in sliding contact with the inner wall of the second support frame arm.

5. The multifunctional intelligent wheelchair according to claim 2, characterized in that: The first driving component includes a first rotating shaft, a first bevel gear, a second bevel gear, a third bevel gear, a fourth bevel gear and a first motor; the first rotating shaft is rotatably connected to the base; the first rotating shaft is perpendicular to the first screw rod; the first bevel gear is coaxially connected to the bottom of the first screw rod; the second bevel gear is coaxially connected to one end of the first rotating shaft; the first bevel gear and the second bevel gear are meshed; the third bevel gear is coaxially connected to the bottom of the second screw rod; the third bevel gear is coaxially connected to the other end of the first rotating shaft; the third bevel gear and the fourth bevel gear are meshed; the first motor is arranged on the base; the first motor is used to drive the first rotating shaft to rotate; the controller is also used to control the start and stop of the first motor.

6. The multifunctional intelligent wheelchair according to claim 1, characterized in that: It also includes a first limiting rod and a first sleeve; the first sleeve is connected to the first support frame arm, and the first sleeve is parallel to the first support frame arm; the first limiting rod is vertically connected to the middle part of the first cross arm; the first limiting rod is slidably inserted into the first sleeve.

7. The multifunctional intelligent wheelchair according to claim 6, characterized in that: It also includes a second limiting rod and a second sleeve; the second sleeve is connected to the second support frame arm, and the second sleeve is parallel to the second support frame arm; the second limiting rod is vertically connected to the middle part of the second cross arm; the second limiting rod is slidably passed through the second sleeve.

8. The multifunctional intelligent wheelchair according to claim 1, characterized in that: It also includes a latch rod and a latch buckle; the latch buckle is arranged on the first vertical arm; the latch rod is arranged on the support backboard; the support backboard can be rotated to engage with the first vertical arm; when the support backboard engages with the first vertical arm, the latch rod can be inserted into the latch buckle to lock the support backboard.

9. The multifunctional intelligent wheelchair according to claim 1, characterized in that: The seat cushion component includes a seat cushion soft plate, a gear soft plate and a seat cushion frame; the seat cushion soft plate is arranged on the seat cushion frame; the seat cushion frame is a rectangular frame; a notch is opened in the middle of the seat cushion soft plate; the gear soft plate can be fitted into the notch; the connecting belt component is a buckle strap; the seat cushion frame includes a first frame arm and a second frame arm that are parallel and opposite to each other; the number of the buckle straps is at least 4; at least 2 of the buckle straps are arranged between the first frame arm and the first cross arm, and at least 2 of the buckle straps are arranged between the second frame arm and the second cross arm.

10. The multifunctional intelligent wheelchair according to claim 5, characterized in that: The second driving assembly includes a first roller, a second roller, a third roller, a fourth roller, a second motor and a third motor; the first roller, the second roller, the third roller and the fourth roller are all rotatably connected to the base; the first roller and the second roller are opposite to each other; the third roller and the fourth roller are opposite to each other; the first roller is closer to the first support frame arm than the third roller; the second roller is closer to the second support frame arm than the fourth roller; the second motor is connected to the first roller through a first reducer; the third motor is connected to the second roller through a second reducer; the controller is also used to control the start and stop of the second motor and the third motor.

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