CN110897798A

CN110897798A - Electric wheelchair capable of going to toilet and control method thereof

Info

Publication number: CN110897798A
Application number: CN201911180587.8A
Authority: CN
Inventors: 朱荣明; 胡博; 杨小亭
Original assignee: Xi'an Xing Tong Tong Intelligent Equipment Technology Co Ltd
Current assignee: Xi'an Xing Tong Tong Intelligent Equipment Technology Co Ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-03-24

Abstract

The invention provides an electric wheelchair capable of going to toilet and a control method thereof, and relates to the technical field of electric wheelchairs. The electric wheelchair capable of going to toilet comprises a chassis, wherein chassis frames are fixedly connected to four sides of the outer surface of the chassis, two ends, far away from the chassis, of the chassis frames are connected with rear wheels in a rotating mode, two ends, far away from the rear wheels, of the chassis frames are connected with supporting driving wheels in a rotating mode, the top end of the chassis is close to two driving motors fixedly connected to the positions, far away from the two supporting driving wheels, of the two driving motors, and output shafts of the two driving motors are fixedly connected with the two supporting driving wheels respectively. The user can be according to the length of trip distance, adjusts comfortable gesture when using and goes on a journey or the rest of short time, and corresponding position and gesture can be adjusted according to user's requirement to seat and foot support, and the user need not leave electronic wheelchair, move to assist on the utensil closestool, and operating means uses convenient, simple, through the accurate height dimension and the position that corresponds of detection closestool of intellectual detection system module.

Description

Electric wheelchair capable of going to toilet and control method thereof

Technical Field

The invention relates to the technical field of electric wheelchairs, in particular to an electric wheelchair capable of going to toilet and a control method thereof.

Background

With the increasing scientific and technical level, the wheelchair industry shows a trend of vigorous development, more and more wheelchair vehicles serve the life, so that the life of people is intelligentized, the quality of life is improved, some people who are inconvenient to move or cannot walk for a long distance experience normal travel or travel life through the electric wheelchair, and the electric wheelchair is accepted by the society and is continuously developed towards the direction of diversification and intellectualization.

At present, the market-oriented transportation tool mainly has transportation functions, such as: manual wheelchair and some do not possess the electronic wheelchair of other intelligent functions, only can solve ordinary closely the trip problem, can't realize the auxiliary user like the lavatory, and current many help still exist like the lavatory wheelchair do not have the control positioning system that backs a car and do not have the function of adjusting from top to bottom of seat height, can't adapt to the problem of the closestool of not co-altitude, so design one kind can like the intelligent electronic wheelchair of lavatory can alleviate the burden of accompanying personnel, improve user's quality of life.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the electric wheelchair capable of using the toilet and the control method thereof, and solves the problems that the existing many wheelchair capable of using the toilet is not provided with a backing control positioning system and a seat height up-and-down adjusting function.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the electric wheelchair capable of using as a toilet comprises a chassis, wherein four sides of the outer surface of the chassis are fixedly connected with a chassis frame, two ends of the chassis frame, which are far away from the chassis, are respectively and rotatably connected with a rear wheel, two ends of the chassis frame, which are far away from the rear wheels, are respectively and rotatably connected with supporting driving wheels, the top end of the chassis, which is close to the two supporting driving wheels, is respectively and fixedly connected with a driving motor, output shafts of the two driving motors are respectively and fixedly connected with the two supporting driving wheels, the top of the chassis is provided with a seat, the seat comprises a backrest frame, push handles are fixedly connected with the middle positions of two sides of the backrest frame, armrest frameworks are fixedly connected with the positions of two sides of the backrest frame, which are close to the push handles, one side of each armrest framework is fixedly connected with an operating device, two, the bottom of back frame is provided with the seat frame, and all fixed connection between seat frame and two angle modulation wares, fixed connection between the output shaft of angle modulation motor and the seat frame, seat frame top fixedly connected with seatpad, the one end that the back frame was kept away from to the seat frame is provided with the foot rest, the position that the top of chassis is close to two driving motor is provided with elevating system, elevating system includes: the bottoms of the two connecting frames are rotationally connected with the chassis, the top ends of the two connecting frames are rotationally connected with the seat frame, the chassis frame and the inner side of the seat frame are respectively and fixedly connected with two slide rails correspondingly, the bottom ends and the top ends of the two connecting frames are respectively and rotatably connected with pulleys, the four pulleys are respectively embedded and slidably connected with the four slide rails, the middle position of the bottom of the two connecting frames is provided with a first push rod connecting seat, and the first push rod connecting seat is fixedly connected with the chassis, the first push rod connecting seat is rotationally connected with a first electric push rod, the piston end of the first electric push rod is rotationally connected with a second push rod connecting seat which is fixedly connected with the seat frame, the top of chassis is provided with control system, and control system is located the position between two link.

Preferably, the chassis frame comprises a chassis front cross beam and a chassis side beam, the chassis front cross beam is fixedly connected with the two driving motors, and the chassis side beam is rotatably connected with the rear wheels.

Preferably, the foot rest comprises a bracket, the top end of the bracket is rotatably connected with the seat frame, the inner side of the bracket is rotatably connected with a second electric push rod, a third push rod connecting seat is fixedly connected to the position, close to the second electric push rod, of the bottom end of the seat frame, the third push rod connecting seat is rotatably connected with the second electric push rod, and a pedal plate is rotatably connected to the bottom end of the bracket.

Preferably, the control system comprises two first distance measuring sensors, a second distance measuring sensor, two third distance measuring sensors, a direct current power supply and a control key switch, wherein the two first distance measuring sensors are respectively and fixedly connected with the bottom end of the pedal and the rear end of the side edge beam of the chassis, the second distance measuring sensor is fixedly connected with the rear end of the seat frame, the two third distance measuring sensors are respectively and fixedly connected with the two sides of the side edge beam of the seat frame, the direct current power supply is fixedly connected with the top end of the chassis, and the control key switch is fixedly connected with the armrest frame.

Preferably, the operating device comprises an operating lever and a manipulator connecting plate, the operating lever is fixedly connected with the manipulator connecting plate, and the manipulator connecting plate is fixedly connected with the armrest framework.

Preferably, a cushion cover is arranged at the top end of the cushion, and a through groove is formed in the middle of the top end of the cushion.

Preferably, the seat frame comprises a seat frame side beam and a seat frame front cross beam, the seat frame side beam is fixedly connected with the seat frame front cross beam, the seat frame side beam is rotatably connected with the connecting frame, and the seat frame front cross beam is fixedly connected with the second push rod connecting seat.

Preferably, an auxiliary closestool is arranged on one side of the toilet electric wheelchair.

The control method of the electric wheelchair capable of using the toilet comprises the following steps:

a: the control lever controls the walking movement of the closestool to drive to the position near the closestool;

b: moving the seat to a closestool for defecation;

① the intelligent electric wheelchair can go to the front position of the auxiliary closestool, the intelligent electric wheelchair can go back to the upper part of the auxiliary closestool through the control of the operating device, the control system can collect data 1 and data 2 distance data according to the signals fed back by the first distance measuring sensors arranged at the rear ends of the side beams of the left and right chassis on the chassis during the process of backing, and the left and right travelling wheels are adjusted during the process of backing to enable the distances between the data 1 and the data 2 to be close, thereby ensuring that the intelligent electric wheelchair can go to the auxiliary closestool 6 without the problem of left and right deflection.

② the wheelchair can be adjusted while moving backward, and the distance date3 from the wheelchair to the upper water tank of the toilet is detected by the second distance measuring sensor at the rear end of the seat frame until the distance reaches 30cm from the water tank, and the wheelchair stops moving backward.

③ after the car is backed, the height of the wheelchair is adjusted to match with the auxiliary closestool, the control key switch is pushed forward to control the first electric push rod to start to contract, the height of the seat surface is reduced, the height of the auxiliary closestool can be collected by the third distance measuring sensor arranged on the side beams of the left and right seat frames on the seat frame, so as to ensure that the auxiliary closestool is not damaged in the process of descending the seat, and the control key switch is accurately stopped and pulled back to the initial position.

④ the driving motor 14 is actuated by the brake system, the wheelchair position is locked and can not move, and the user finishes the preparation work before going to the toilet with the help of the accompanying personnel to go to the toilet.

c: finishing like the lavatory, the user arranges the clothing under the assistance of accompanying person, dial control key switch seat backward and begin to rise, reset after rising to stopping, gather date1, date2, date3 apart from data, adjust the walking wheel differential according to date1, date2 for avoid hitting the assistive device closestool when the wheelchair leaves the closestool, detect the distance of wheelchair and assistive device closestool water tank in the driving process, until distance 1m department, withdraw from like the lavatory mode, the user controls it to travel and leaves.

The working principle is as follows: when the device is used, a user starts a driving motor on the chassis by operating a control lever on the operating device, the driving wheel is controlled and supported by the driving motor to drive the rear wheel and the device to integrally drive to the vicinity of the auxiliary tool closestool, then the device integrally backs to the upper part of the auxiliary tool closestool by operating the operating device, a control system can send a signal fed back by a first distance measuring sensor arranged at the rear end of a side edge beam of the chassis to ensure that the device does not incline when moving to the top of the auxiliary tool closestool, the device detects the distance between a wheelchair body and a water tank on the auxiliary tool closestool by a second distance measuring sensor arranged at the rear end of a seat frame while backing, the device stops moving until the device is 30cm away from a water tank, and after the backing is finished, the user forwards toggles a control key switch on a handrail framework to ensure that a connecting frame of the lifting mechanism drives the seat frame to descend by a first electric push rod on a second push rod connecting seat, the seat is descended, the height and the size of the auxiliary closestool can be collected through a third distance measuring sensor arranged on a side edge beam of the seat frame, so that the seat is accurately stopped when descending, the auxiliary closestool is prevented from being damaged, when a user prepares to go to the toilet, the seat cushion cover is taken out so that the user can conveniently sit on the seat cushion to go to the toilet, after the toilet is finished, the user arranges clothes under the help of accompanying personnel, then the control key switch is shifted backwards, the seat is lifted and reset, so that the user operating equipment is convenient to leave, when the user needs to adjust the position of a foot rest, the included angle between the seat and the frame is changed by starting a second electric push rod on a third push rod connecting seat, the seat rotates along with the change of the position of the foot rest of a pedal user, when the user needs to adjust the angle of the backrest frame, the angle adjusting motor is started, the seat frame changes the included angle between the angle regulator and the backrest frame, thereby completing the adjustment of the angle of the backrest frame.

(III) advantageous effects

The invention provides an electric wheelchair capable of going to toilet and a control method thereof. The method has the following beneficial effects:

1. according to the toilet electric wheelchair and the control method thereof, a user can adjust a comfortable posture to go out or take a short time rest when using the toilet electric wheelchair according to the length of a trip distance, and the corresponding position and posture of the seat and the foot rest can be adjusted according to the requirements of the user.

2. The user can go the electronic wheelchair to assist and go on like the lavatory on the utensil closestool, and the user need not leave electronic wheelchair, moves to assisting on the utensil closestool, and operating means uses convenient, simple. The height size and the corresponding position of closestool can be accurately detected through the intelligent detection module.

Drawings

FIG. 1 is a schematic structural view of an intelligent electric wheelchair capable of using a toilet provided by the invention;

FIG. 2 is a schematic structural diagram of a chassis of the intelligent electric wheelchair capable of using the toilet provided by the invention;

FIG. 3 is a schematic view of a lifting mechanism of the intelligent electric wheelchair capable of using the toilet provided by the invention;

FIG. 4 is a schematic view of a toilet intelligent electric wheelchair seat provided by the invention;

FIG. 5 is a schematic view of a foot rest of an intelligent electric wheelchair capable of using a toilet provided by the invention;

FIG. 6 is a schematic view of an operating device of the intelligent electric wheelchair capable of using the toilet provided by the invention;

FIG. 7 is a schematic state diagram of a first step in the toilet procedure of the intelligent electric wheelchair capable of using the toilet provided by the invention;

FIG. 8 is a schematic state diagram of a second step in the toilet procedure of the intelligent electric wheelchair capable of using the toilet provided by the invention;

FIG. 9 is a schematic diagram illustrating a third step of the toilet procedure of the intelligent electric toilet-ready wheelchair according to the present invention;

fig. 10 is a schematic view of the lying posture of the intelligent toilet-ready electric wheelchair provided by the invention.

Wherein, 1, a chassis; 12. a chassis frame; 121. a chassis front cross member; 122. a chassis side beam; 14. a drive motor; 18. a rear wheel; 19. supporting a driving wheel; 2. a foot support; 21. a bracket; 22. a third push rod connecting seat; 23. a second electric push rod; 24. a foot pedal; 3. a lifting mechanism; 31. a connecting frame; 32. a slide rail; 33. a first push rod connecting seat; 34. a pulley; 35. a second push rod connecting seat; 36. a first electric push rod; 4. a control system; 41. a first ranging sensor; 42. a second ranging sensor; 43. a third ranging sensor; 44. a direct current power supply; 45. controlling a key switch; 5. a seat; 51. a cushion cover; 52. a pushing handle; 53. an operating device; 532. a joystick; 533. a manipulator connection plate; 54. a handrail framework; 55. a seat frame; 551. a seat frame side beam; 552. a seat frame front cross member; 56. a seat cushion; 57. a backrest frame; 58. an angle adjuster; 59. an angle adjusting motor; 6. an auxiliary toilet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1-10, an electric wheelchair for toilet use according to an embodiment of the present invention includes a chassis 1, a chassis frame 12 fixedly connected to four sides of an outer surface of the chassis 1, rear wheels 18 rotatably connected to two ends of the chassis frame 12 away from the chassis 1, supporting driving wheels 19 rotatably connected to two ends of the chassis frame 12 away from the rear wheels 18, driving motors 14 fixedly connected to positions of a top end of the chassis 1 near the two supporting driving wheels 19, output shafts of the two driving motors 14 respectively and fixedly connected to the two supporting driving wheels 19, a seat 5 disposed on a top of the chassis 1, the seat 5 including a backrest frame 57, push handles 52 fixedly connected to middle positions of two sides of the backrest frame 57, armrest frameworks 54 fixedly connected to positions of two sides of the backrest frame 57 near the push handles 52, an operating device 53 fixedly connected to one side of the armrest frameworks 54, and angle adjusters 58 fixedly connected to two sides of a bottom end of the backrest frame 57, the inboard fixedly connected with angle modulation motor 59 of one end of back frame 57, the bottom of back frame 57 is provided with seat frame 55, and equal fixed connection between seat frame 55 and two angle modulation wares 58, fixed connection between the output shaft of angle modulation motor 59 and the seat frame 55, seat frame 55 top fixedly connected with seatpad 56, the one end that back frame 57 was kept away from to seat frame 55 is provided with the foot rest 2, the position that the top of chassis 1 is close to two driving motor 14 is provided with elevating system 3, elevating system 3 includes: the bottom parts of the two connecting frames 31 are rotatably connected with the chassis 1, the top ends of the two connecting frames 31 are rotatably connected with the seat frame 55, the inner sides of the chassis frame 12 and the seat frame 55 are correspondingly and fixedly connected with two slide rails 32, the bottom ends and the top ends of the two connecting frames 31 are rotatably connected with pulleys 34, the four pulleys 34 are respectively embedded and slidably connected with the four slide rails 32, the middle position of the bottom parts of the two connecting frames 31 is provided with a first push rod connecting seat 33, and the first push rod connecting seat 33 is fixedly connected with the chassis 1, the first push rod connecting seat 33 is rotatably connected with a first electric push rod 36, the piston end of the first electric push rod 36 is rotatably connected with a second push rod connecting seat 35, the second push rod connecting seat 35 is fixedly connected with the seat frame 55, the top end of the chassis 1 is provided with a control system 4, and the control system 4 is positioned between the two connecting frames 31.

The chassis frame 12 comprises a chassis front beam 121 and a chassis side beam 122, the chassis front beam 121 and the chassis side beam 122 are fixedly connected, the chassis front beam 121 and the two driving motors 14 are fixedly connected, and the chassis side beam 122 and the rear wheels 18 are rotatably connected, so that the overall stability of the chassis 1 of the equipment is improved; the foot rest 2 comprises a bracket 21, the top end of the bracket 21 is rotatably connected with a seat frame 55, the inner side of the bracket 21 is rotatably connected with a second electric push rod 23, the bottom end of the seat frame 55 close to the second electric push rod 23 is fixedly connected with a third push rod connecting seat 22, the third push rod connecting seat 22 is rotatably connected with the second electric push rod 23, and the bottom end of the bracket 21 is rotatably connected with a pedal plate 24, so that a user can conveniently adjust the supporting position of the leg; the control system 4 comprises two first distance measuring sensors 41, a second distance measuring sensor 42, two third distance measuring sensors 43, a direct current power supply 44 and a control key switch 45, wherein the two first distance measuring sensors 41 are respectively and fixedly connected with the bottom end of the pedal 24 and the rear end of the chassis side beam 122, the second distance measuring sensor 42 is fixedly connected with the rear end of the seat frame 55, the two third distance measuring sensors 43 are respectively and fixedly connected with the two sides of the seat frame side beam 551, the direct current power supply 44 is fixedly connected with the top end of the chassis 1, and the control key switch 45 is fixedly connected with the handrail framework 54, so that the equipment is more stable during movement, and collision with other objects is avoided; the operating device 53 comprises an operating rod 532 and a manipulator connecting plate 533, the operating rod 532 is fixedly connected with the manipulator connecting plate 533, and the manipulator connecting plate 533 is fixedly connected with the armrest framework 54, so that a user can conveniently operate the equipment; the top end of the seat cushion 56 is provided with a seat cushion cover 51, and the middle position of the top end of the seat cushion 56 is provided with a through groove, so that a user can go to the toilet conveniently; the seat frame 55 comprises a seat frame side beam 551 and a seat frame front cross beam 552, the seat frame side beam 551 is fixedly connected with the seat frame front cross beam 552, the seat frame side beam 551 is rotatably connected with the connecting frame 31, and the seat frame front cross beam 552 is fixedly connected with the second push rod connecting seat 35, so that the stability of the seat 5 is improved; an auxiliary tool closestool 6 is arranged on one side of the electric wheelchair capable of going to the toilet, so that a user can go to the toilet conveniently.

a: the walking movement of the closestool is controlled by the operating rod 532, and the closestool is driven to the vicinity;

b: moving the seat to a closestool for defecation;

① the intelligent electric wheelchair capable of using the toilet runs to the front position of the auxiliary tool closestool 6, the intelligent electric wheelchair capable of using the toilet is controlled by the operating device 53 to retreat to the upper part of the auxiliary tool closestool, in the process of reversing, the control system collects data of the distances between date1 and date2 according to the signals fed back by the first distance measuring sensors 41 arranged at the rear ends of the left and right chassis side beams 122 on the chassis 1, and the left and right travelling wheels are adjusted in the process of retreating to enable the distances between date1 and date2 to be close to plus or minus 2cm, so that the intelligent electric wheelchair capable of using the toilet can run to the auxiliary tool closestool 6 without the left and right deflection problems.

② the wheelchair is adjusted while moving backward by adjusting the rear wheel 18 and the supporting driving wheel 19, and the distance date3 of the wheelchair from the upper water tank of the toilet bowl 6 is detected by the second distance measuring sensor 42 at the rear end of the seat frame 55 until the distance reaches 30cm from the water tank, and the backward movement is stopped.

③ after the back-up, the height of the seat 5 of the wheelchair is adjusted to match with the auxiliary tool toilet bowl 6, the control key switch 45 is pushed forward to control the first electric push rod 36 to start to contract, the height of the seat 5 is lowered, the height of the auxiliary tool toilet bowl 6 can be collected by the third distance measuring sensor 43 arranged on the side beams 551 of the left and right seat frames on the seat frame 55, so as to ensure that the auxiliary tool toilet bowl 6 is not damaged and stops accurately in the process of lowering the seat 5, and the control key switch 45 is pushed back to the initial position.

c: finishing using the toilet, arranging clothes by a user with the help of an attendant, shifting the control key switch 45 backwards to enable the seat surface to start rising until the seat surface resets after rising to a stop, acquiring data 1, data 2 and data 3 distance data, adjusting the travelling wheel differential speed according to data 1 and data 2, avoiding colliding with the auxiliary tool closestool 6 when the wheelchair leaves the closestool, detecting the distance between the wheelchair and the auxiliary tool closestool 6 water tank in the driving process until the distance is 1m, exiting from the toilet using mode, and operating the wheelchair to drive to leave.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Can be like electronic wheelchair in lavatory, including chassis (1), its characterized in that: the chassis is characterized in that chassis frames (12) are fixedly connected to four sides of the outer surface of the chassis (1), two ends, far away from the chassis (1), of the chassis frames (12) are rotatably connected with rear wheels (18), two ends, far away from the rear wheels (18), of the chassis frames (12) are rotatably connected with supporting driving wheels (19), driving motors (14) are fixedly connected to positions, close to the two supporting driving wheels (19), of the top end of the chassis (1), output shafts of the two driving motors (14) are fixedly connected with the two supporting driving wheels (19), a seat (5) is arranged at the top of the chassis (1), the seat (5) comprises a backrest frame (57), pushing handles (52) are fixedly connected to the middles of two sides of the backrest frame (57), and armrest frameworks (54) are fixedly connected to positions, close to the pushing handles (52), of two sides of the backrest frame (57), the seat backrest comprises a handrail framework (54), an operating device (53) is fixedly connected to one side of the handrail framework (54), angle adjusters (58) are fixedly connected to two sides of the bottom end of a backrest frame (57), an angle adjusting motor (59) is fixedly connected to the inner side of one end of the backrest frame (57), a seat frame (55) is arranged at the bottom of the backrest frame (57), the seat frame (55) is fixedly connected with the two angle adjusters (58), the seat frame (55) is fixedly connected with the seat cushion (56), one end, far away from the backrest frame (57), of the seat frame (55) is provided with a foot support (2), a lifting mechanism (3) is arranged at a position, close to two driving motors (14), of the top end of the chassis (1), and the lifting mechanism (3) comprises: the bottom of each of the two connecting frames (31) is rotatably connected with the chassis (1), the top ends of the two connecting frames (31) are rotatably connected with the seat frame (55), the inner sides of the chassis frame (12) and the seat frame (55) are respectively and fixedly connected with two sliding rails (32) correspondingly, the bottom ends and the top ends of the two connecting frames (31) are respectively and rotatably connected with pulleys (34), the four pulleys (34) are respectively embedded and slidably connected with the four sliding rails (32), a first push rod connecting seat (33) is arranged at the middle position of the bottom of each of the two connecting frames (31), the first push rod connecting seat (33) is fixedly connected with the chassis (1), the first push rod connecting seat (33) is rotatably connected with a first electric push rod (36), and the piston end of the first electric push rod (36) is rotatably connected with a second push rod connecting seat (35), the second push rod connecting seat (35) is fixedly connected with the seat frame (55), the top end of the chassis (1) is provided with a control system (4), and the control system (4) is located between the two connecting frames (31).

2. The potty electric wheelchair as claimed in claim 1, wherein: the chassis frame (12) comprises a chassis front cross beam (121) and chassis side beams (122), the chassis front cross beam (121) is fixedly connected with the two driving motors (14), and the chassis side beams (122) are rotatably connected with the rear wheels (18).

3. The potty electric wheelchair as claimed in claim 1, wherein: the foot support (2) comprises a bracket (21), the top end of the bracket (21) is rotatably connected with a seat frame (55), the inner side of the bracket (21) is rotatably connected with a second electric push rod (23), the bottom end of the seat frame (55) is fixedly connected with a third push rod connecting seat (22) close to the second electric push rod (23), the third push rod connecting seat (22) is rotatably connected with the second electric push rod (23), and the bottom end of the bracket (21) is rotatably connected with a pedal plate (24).

4. The potty electric wheelchair as claimed in claim 1, wherein: the control system (4) comprises two first distance measuring sensors (41), a second distance measuring sensor (42), two third distance measuring sensors (43), a direct current power supply (44) and a control key switch (45), wherein the two first distance measuring sensors (41) are respectively and fixedly connected with the bottom end of a pedal (24) and the rear end of a chassis side beam (122), the second distance measuring sensor (42) is fixedly connected with the rear end of a seat frame (55), the two third distance measuring sensors (43) are respectively and fixedly connected with two sides of the seat frame side beam (551), the direct current power supply (44) is fixedly connected with the top end of the chassis (1), and the control key switch (45) is fixedly connected with an armrest frame (54).

5. The potty electric wheelchair as claimed in claim 1, wherein: the operating device (53) comprises an operating rod (532) and a manipulator connecting plate (533), wherein the operating rod (532) is fixedly connected with the manipulator connecting plate (533), and the manipulator connecting plate (533) is fixedly connected with the armrest framework (54).

6. The potty electric wheelchair as claimed in claim 1, wherein: the top of seatpad (56) is provided with seatpad cover (51), logical groove has been seted up to the top intermediate position of seatpad (56).

7. The potty electric wheelchair as claimed in claim 1, wherein: the seat frame (55) comprises a seat frame side beam (551) and a seat frame front cross beam (552), the seat frame side beam (551) and the seat frame front cross beam (552) are fixedly connected, the seat frame side beam (551) and the connecting frame (31) are rotatably connected, and the seat frame front cross beam (552) and the second push rod connecting seat (35) are fixedly connected.

8. The potty electric wheelchair as claimed in claim 1, wherein: an auxiliary tool closestool (6) is arranged on one side of the toilet electric wheelchair.

9. A method of controlling a potty electric wheelchair in accordance with any one of claims 1 to 8, wherein: the method comprises the following steps:

a: the walking movement of the closestool is controlled by a control lever (532) to drive to the vicinity of the closestool;

b: moving the seat to a closestool for defecation;

① the intelligent electric wheelchair capable of using the toilet runs to the front position of the auxiliary closestool (6), the intelligent electric wheelchair capable of using the toilet is controlled by the operating device (53) to retreat to the upper part of the auxiliary closestool, in the process of reversing, the control system collects data of distances between date1 and date2 according to signals fed back by the first distance measuring sensor (41) arranged at the rear ends of the left and right chassis side beams (122) on the chassis (1), and the left and right travelling wheels are adjusted in the process of retreating to enable the distances between date1 and date2 to be close (plus or minus 2cm), so that the intelligent electric wheelchair capable of using the toilet runs to the auxiliary closestool 6 without the problem of left and right deflection.

② the wheelchair can adjust the rear wheel (18) and the supporting driving wheel (19) while moving backwards, and the distance date3 from the wheelchair to the upper water tank of the auxiliary tool toilet bowl (6) is detected by the second distance measuring sensor (42) at the upper rear end of the seat frame (55) until the distance reaches 30cm from the water tank, and the wheelchair stops moving backwards.

③ when backing, adjusting the height of the seat (5) of the wheelchair, so as to match with the auxiliary closestool (6), and poking the control key switch (45) forward, controlling the first electric push rod (36) to start to shrink, descending the height of the seat (5), through the third distance measuring sensor (43) installed on the side beam (551) of the left and right seat frames on the seat frame (55), the height of the auxiliary closestool (6) can be collected, so as to ensure the descending process of the seat (5), the auxiliary closestool (6) can not be damaged, and the wheelchair can stop accurately, and the control key switch (45) is returned to the initial position.

c: finishing using the toilet, arranging clothes by a user with the help of an attendant, shifting a control key switch (45) backwards to enable the seat surface to start rising until the seat surface resets after rising to a stop, collecting data 1, 2 and 3 distance data, adjusting the travelling wheel differential speed according to data 1 and data 2, avoiding colliding with an auxiliary tool closestool (6) when the wheelchair leaves the closestool, detecting the distance between the wheelchair and a water tank of the auxiliary tool closestool (6) in the driving process until the distance is 1m, exiting from the toilet using mode, and operating the wheelchair by the user to drive and leave.