CN110478147B - Electric wheelchair - Google Patents

Electric wheelchair Download PDF

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Publication number
CN110478147B
CN110478147B CN201910821562.5A CN201910821562A CN110478147B CN 110478147 B CN110478147 B CN 110478147B CN 201910821562 A CN201910821562 A CN 201910821562A CN 110478147 B CN110478147 B CN 110478147B
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China
Prior art keywords
steering
wheel
assembly
steering control
seat
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Active
Application number
CN201910821562.5A
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Chinese (zh)
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CN110478147A (en
Inventor
林正坚
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Sichuan Ast Medical Equipment Co ltd
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Sichuan Ast Medical Equipment Co ltd
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Priority to CN201910821562.5A priority Critical patent/CN110478147B/en
Publication of CN110478147A publication Critical patent/CN110478147A/en
Application granted granted Critical
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1005—Wheelchairs having brakes
    • A61G5/1035—Wheelchairs having brakes manipulated by wheelchair user
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1051—Arrangements for steering
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1059—Arrangements for adjusting the seat adjusting the height of the seat
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1089—Anti-tip devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A61G5/125—Rests specially adapted therefor, e.g. for the head or the feet for arms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00—General characteristics of devices
    • A61G2203/10—General characteristics of devices characterised by specific control means, e.g. for adjustment or steering
    • A61G2203/14—Joysticks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00—General characteristics of devices
    • A61G2203/70—General characteristics of devices with special adaptations, e.g. for safety or comfort

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Automatic Cycles, And Cycles In General (AREA)

Abstract

The invention provides an electric wheelchair, which comprises a seat assembly and a wheel assembly, wherein the wheel assembly is used for bearing and driving the seat assembly to move, the seat assembly comprises an armrest, a steering control assembly is connected to the armrest, and the steering control assembly is connected with the armrest and the wheel assembly; when the armrest is under the action of external force, the steering control assembly can be triggered to carry out adaptive traction action, and corresponding steering acting force is applied to the wheel assembly so as to drive the wheel assembly to carry out steering action; the electric wheelchair with the structure can greatly reduce the production cost of the electric wheelchair and reduce the whole volume of the electric wheelchair, thereby improving the practical applicability of the electric wheelchair to different occasions.

Description

Electric wheelchair
Technical Field
The invention relates to the technical field of scooter, in particular to an electric wheelchair.
Background
The electric wheelchair is mainly used as a scooter for a mobility impaired person, the current electric wheelchair controls the steering state, the speed state and other motion states of the electric wheelchair through the rocker controller, and although the rocker controller can improve the convenience of a user for adjusting the motion state of the electric wheelchair, the rocker controller is arranged on the electric wheelchair as an independent control part, so that the electric wheelchair occupies space additionally, the manufacturing cost of the rocker controller is high, and accordingly the production cost of the electric wheelchair is high. In addition, the rocker controller of the existing electric wheelchair adopts a T-shaped control rod structure, and the T-shaped control rod structure is large in size and cannot be folded, so that the volume of the electric wheelchair is increased to a certain extent, and meanwhile, the applicability of the electric wheelchair to different occasions is seriously affected because the electric wheelchair does not have the characteristic of folding and containing. Therefore, the electric wheelchair in the prior art has the defects of high production cost, large volume, incapability of folding, storage, complex steering control and the like.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides an electric wheelchair, which includes a seat assembly and a wheel assembly, wherein the wheel assembly is used for carrying and driving the seat assembly to move, the seat assembly includes a handrail, a steering control assembly is connected to the handrail, and the steering control assembly connects the handrail and the wheel assembly; when the armrest is under the action of external force, the steering control assembly can be triggered to carry out adaptive traction action, and corresponding steering acting force is applied to the wheel assembly so as to drive the wheel assembly to carry out steering action. Therefore, the electric wheelchair is different from the prior art that the motion state of the electric wheelchair is controlled by adopting a rocker controller such as a T-shaped control rod, and the electric wheelchair combines the armrests on the seat assembly with the steering control assembly, so that a user can drive the electric wheelchair to perform adaptive steering action through the steering control assembly by performing corresponding operation on the armrests, the electric wheelchair takes the armrests to replace the rocker controller as the steering controller, the trouble that the rocker controller is arranged in a special reserved space can be saved, and the electric wheelchair can be rapidly and conveniently steering controlled under the condition that the expensive rocker controller is not used, so that the production cost of the electric wheelchair is greatly reduced, and the whole volume of the electric wheelchair is reduced; in addition, the electric wheelchair is further provided with a folding structure, and the folding structure allows the electric wheelchair to be stored and folded, so that the storage occupied space of the electric wheelchair is conveniently and effectively reduced, and the practical applicability of the electric wheelchair to different occasions is improved.
The invention provides an electric wheelchair, which comprises a seat assembly and a wheel assembly, wherein,
The wheel assembly is used for bearing and driving the seat assembly to move, and is characterized in that:
The seat assembly includes an armrest;
the handrail is connected with a steering control assembly;
The steering control assembly connects the armrest with the wheel assembly;
When the armrest is under the action of external force, the steering control assembly can be triggered to carry out adaptive traction action, and corresponding steering acting force is applied to the wheel assembly so as to drive the wheel assembly to carry out steering action;
further, the steering control assembly comprises a first steering control module and a second steering control module; wherein,
The first steering control module and the second steering control module are symmetrically distributed on the left side and the right side of the electric wheelchair;
The first steering control module is connected with a left armrest of the seat assembly, and the second steering control module is connected with a right armrest of the seat assembly;
the first steering control module and the second steering control module are respectively connected with a left front wheel and a right front wheel of the wheel assembly so as to drive the left front wheel and the right front wheel to rotate;
Further, the first steering control module and the second steering control module respectively comprise a steering connecting rod lifting rod, a steering connecting rod lifting main rod, a steering connecting part, a steering control line part, a steering plate and a steering connecting rod which are connected in sequence; wherein,
One end of the steering connecting rod lifting rod is connected with the handrail, and the other end of the steering connecting rod lifting rod is sleeved in the steering connecting rod lifting main rod;
the steering connecting rod lifting main rod is sleeved in the steering main rod;
The steering main rod is rotationally connected with the steering connecting part shaft;
One end of the steering control line part is rotationally connected with the steering connecting part shaft, and the other end of the steering control line part is hinged with the steering plate;
one end of the steering connecting rod is rotationally connected with the steering plate shaft, and the other end of the steering connecting rod is hinged with the corresponding left front wheel or right front wheel;
Further, the steering plate comprises two steering control line hinging points which are distributed symmetrically left and right, and the steering control line parts of the first steering control module and the second steering control module are hinged with the steering plate through the corresponding steering control line hinging points;
the front end part of the steering plate is provided with a first rotating shaft in a penetrating way, a steering connecting rod of the first steering control module is connected with the first rotating shaft on the lower surface of the steering plate, and a steering connecting rod of the second steering control module is connected with the first rotating shaft on the upper surface of the steering plate;
Further, the wheel assembly further comprises a front wheel cross beam, a main frame, a left rear wheel and a right rear wheel;
the front wheel cross beam is respectively connected with the left front wheel and the right front wheel;
The steering connecting rod of the first steering control module is simultaneously and rotatably connected with the left front wheel axle piece and the front wheel beam shaft through the left front wheel axle piece;
The steering connecting rod of the second steering control module is simultaneously and rotatably connected with the right front wheel and the front wheel beam shaft through a right front wheel shaft piece;
The rear end part of the steering plate is provided with a second rotating shaft in a penetrating way, the second rotating shaft is rotationally connected with the main frame, and the rear side of the main frame is connected with the left rear wheel and the right rear wheel;
further, the steering control wire portion has a flat structure that is bendable and deformable;
When the armrest is acted by the external force, the armrest can drive the steering connecting rod lifting rod, the steering connecting rod lifting main rod, the steering main rod and the steering connecting part to do translational motion, so that the steering control line part deforms, and at the moment, the steering control line part can apply steering acting force to the steering plate due to deformation, so that the steering plate drives the left front wheel and the right front wheel to do steering action under the action of the steering acting force;
further, the armrest is also provided with a handle, and the handle is connected with a speed controller;
the driving control assembly is used for driving the left rear wheel and the right rear wheel of the wheel assembly to run;
the drive control assembly comprises a motor, a gearbox and an electromagnetic brake;
The speed controller is connected with the drive control assembly and is used for adjusting the drive speed of the drive control assembly to the left rear wheel and the right rear wheel;
Further, the seat assembly includes a seat portion, a seat web, and a seat height adjustment portion; wherein,
The seat part comprises a seat backrest and a seat cushion, and the seat connecting plate is arranged on the bottom surface of the seat cushion so as to elastically connect the seat part and the seat height adjusting part;
The seat height adjusting part comprises a front supporting rod, a bottom supporting rod and an adjusting knob, wherein the front supporting rod is movably sleeved on the bottom supporting rod, and the adjusting knob is used for performing adjustable locking on the front supporting rod and the bottom supporting rod so as to adjust the sleeved length of the front supporting rod on the bottom supporting rod;
The front support rod is connected with the seat connecting plate, and the bottom support rod is connected with the frame of the wheel assembly;
Further, the wheel assembly comprises a frame, a left front wheel, a right front wheel, a left rear wheel, a right rear wheel and an anti-toppling wheel; wherein,
The left front wheel, the right front wheel, the left rear wheel and the right rear wheel are respectively arranged at four corners of the frame;
the anti-toppling wheel is connected with the frame through an anti-toppling wheel bracket and is arranged behind the left rear wheel and the right rear wheel;
Further, the steering control assembly and the wheel assembly are also connected through a rear support rod;
The rear supporting rod is respectively connected with the steering control assembly and the wheel assembly in a foldable manner so as to realize integral folding and storage of the electric wheelchair;
Or alternatively
The frame of the wheel assembly is also provided with a hand-held frame.
Compared with the prior art, the electric wheelchair comprises a seat assembly and a wheel assembly, wherein the wheel assembly is used for bearing and driving the seat assembly to move, the seat assembly comprises an armrest, a steering control assembly is connected to the armrest, and the steering control assembly is connected with the armrest and the wheel assembly; when the armrest is under the action of external force, the steering control assembly can be triggered to carry out adaptive traction action, and corresponding steering acting force is applied to the wheel assembly so as to drive the wheel assembly to carry out steering action. Therefore, the electric wheelchair is different from the prior art that the motion state of the electric wheelchair is controlled by adopting a rocker controller such as a T-shaped control rod, and the electric wheelchair combines the armrests on the seat assembly with the steering control assembly, so that a user can drive the electric wheelchair to perform adaptive steering action through the steering control assembly by performing corresponding operation on the armrests, and the electric wheelchair takes the armrests instead of the rocker controller as the steering controller, so that the original special reserved space is saved, the trouble of arranging the rocker controller is avoided, and the electric wheelchair can be rapidly and conveniently steering controlled under the condition that the expensive rocker controller is not used, thereby greatly reducing the production cost of the electric wheelchair and reducing the whole volume of the electric wheelchair; in addition, the electric wheelchair is further provided with a folding structure, and the folding structure allows the electric wheelchair to be stored and folded, so that the storage occupied space of the electric wheelchair is conveniently and effectively reduced, and the practical applicability of the electric wheelchair to different occasions is improved.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic side view of an electric wheelchair according to the present invention.
Fig. 2 is a schematic diagram of a front view structure of an electric wheelchair according to the present invention.
Fig. 3 is a schematic top view of an electric wheelchair according to the present invention.
Reference numerals: 1. a grip; 2. a speed controller; 3. a grip extension; 4. an armrest; 5. a steering connecting rod lifting main rod; 6. a steering connection portion; 7. a seat connection plate; 8. a steering control line section; 9. an adjustment knob; 10. a frame; 11. a front wheel; 12. anti-toppling wheels; 13. a steering plate; 14. a steering link; 15. a front wheel cross member; 16. a gearbox; 17. a motor; 18. electromagnetic braking; 19. a support rod folding connection part; 20. an anti-tilting wheel bracket; 21. a steering control line hinge point; 22. a rear support bar; 23. a front support bar; 24. a hand-held frame; 25. a steering link lifting lever; 26. a seat back; 27. a seat cushion; 28. a front wheel axle sheet; 29. a rear wheel; 30. turning to the main lever.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3, a side view structure schematic diagram, a front view structure schematic diagram and a top view structure schematic diagram of an electric wheelchair provided by the invention are respectively shown. The electric wheelchair comprises a seat assembly and a wheel assembly, wherein the wheel assembly is used for bearing and driving the seat assembly to move, the seat assembly comprises an armrest 4, the armrest 4 is connected with a steering control assembly, the steering control assembly is connected with the armrest 4 and the wheel assembly, when the armrest 4 is under the action of external force, the steering control assembly can be triggered to carry out adaptive traction action, and corresponding steering acting force is applied to the wheel assembly so as to drive the wheel assembly to carry out steering action. The steering control assembly is used as a transmission connection medium between the armrest 4 of the seat assembly and the wheel assembly, so that when a user holds and acts the armrest 4 by hand, the steering control assembly can convert the manual action of the user into traction deflection action and directly transmit the traction deflection action into the wheel assembly, and the wheel assembly can drive the front wheel 11 in the wheel assembly to steer after receiving the traction deflection action of the steering control assembly, thereby realizing the steering adjustment of the overall motion of the electric wheelchair.
In practical manufacturing, because the electric wheelchair is in a bilateral symmetry structure, in order to facilitate a user to steer and adjust the electric wheelchair by a left hand and/or a right hand, the steering control assembly can comprise a first steering control module and a second steering control module, wherein the first steering control module and the second steering control module are symmetrically distributed on the left side and the right side of the electric wheelchair, the first steering control module is connected with the left handrail of the seat assembly, and the second steering control module is connected with the right handrail of the seat assembly; the first steering control module and the second steering control module are respectively connected with the left front wheel and the right front wheel of the wheel assembly so as to drive the left front wheel and the right front wheel to rotate, so that a user can be prevented from controlling the electric wheelchair to steer and adjust only by one hand, the applicability of the electric wheelchair to chiral users with different habits is greatly improved, and the accuracy and stability of the steering adjustment of the electric wheelchair by the user are improved.
With continued reference to fig. 1-3, the first steering control module and the second steering control module of the electric wheelchair may have the same mechanical connection structure, wherein the first steering control module and the second steering control module respectively include a steering link lifting lever 25, a steering link lifting main lever 5, a steering main lever 30, a steering connection portion 6, a steering control line portion 8, a steering plate 13, and a steering link 14, which are sequentially connected. One end of the steering link lifting rod 25 is connected with the handrail 4, and the other end of the steering link lifting rod 25 is sleeved in the steering link lifting main rod 5; the steering link lifting main rod 5 is sleeved in the steering main rod 30; the steering main rod 30 is rotatably connected with the steering connecting part 6 through a shaft; one end of the steering control line part 8 is rotatably connected with the steering connecting part shaft, and the other end of the steering control line part 8 is hinged with the steering plate 13; one end of the steering link 14 is pivotally connected to the steering plate 13, and the other end of the steering link 14 is hinged to the corresponding left front wheel or right front wheel.
Referring to fig. 2-3, the steering plate 13 may preferably include two steering control line hinge points 21 symmetrically distributed in a left-right direction, and the respective steering control line parts 8 of the first steering control module and the second steering control module are hinged with the steering plate 13 through the corresponding steering control line hinge points 21, so that the steering plate 13 can always maintain a left-right balanced rotation motion in the rotation process and the left-right rotation motion of the steering plate 13 is in a stable motion range, thereby avoiding the occurrence of a situation that the steering plate is obviously deviated from the original rotation direction; the front end portion of the steering plate 13 may preferably be provided with a first rotating shaft in a penetrating manner, the steering link 14 of the first steering control module is connected to the first rotating shaft on the lower surface of the steering plate 13, the steering link 14 of the second steering control module is connected to the first rotating shaft on the upper surface of the steering plate 13, and the steering link 14 of the first steering control module and the steering link 14 of the second steering control module can ensure that the steering plate 13 is always subjected to balanced steering force exerted from the two steering links 14 on the lower surface and the upper surface of the steering plate 13, thereby improving steering controllability of the steering plate 13.
Referring to fig. 1-3, the wheel assembly also preferably includes a front wheel cross member 15, a main frame, a left rear wheel and a right rear wheel; the front wheel cross beam 15 is connected with the left front wheel and the right front wheel respectively; the steering connecting rod 14 of the first steering control module is simultaneously and rotatably connected with the left front wheel axle piece and the front wheel beam shaft through the left front wheel axle piece; the steering connecting rod 14 of the second steering control module is simultaneously and rotatably connected with the right front wheel and the front wheel beam shaft through a right front wheel shaft piece; the rear end portion of the steering plate 13 is provided with a second rotating shaft in a penetrating manner, the second rotating shaft is rotationally connected with the main frame, the rear side of the main frame is connected with the left rear wheel and the right rear wheel, the main frame serves as a basic frame of the wheel assembly, the basic frame is used for connecting the left rear wheel and the right rear wheel, and synchronous actions of the left rear wheel and the right rear wheel are realized through the front wheel cross beam 15, so that driving stability of the wheel assembly is improved.
Referring to fig. 1, the steering control wire section 8 has a flat structure that can be bent and deformed; when the armrest 4 receives the external force, the armrest 4 drives the connecting steering link lifting rod 25, the steering link lifting main rod 5, the steering main rod 30 and the steering connecting part 6 to perform translational motion, so that the steering control line part 8 deforms, and at the moment, the steering control line part 8 applies steering acting force to the steering plate 13 due to deformation, so that the steering plate 13 drives the left front wheel and the right front wheel to perform steering action under the action of the steering acting force, and because the steering control line part 8 has elastic recovery bending deformation characteristics, when the steering control line part 8 applies reciprocating translational motion to the steering connecting part 6 under the action of the steering link lifting main rod 5, the steering main rod 30 and the steering connecting part 5, the steering control line part 8 can correspondingly apply reciprocating steering acting force to the steering plate 13, thereby realizing left or right steering action driving to the left front wheel and the right front wheel.
Referring to fig. 1-2, the armrest 4 is further provided with a grip 1, the grip 1 is connected with the armrest 4 through a grip extension 3, and the grip 1 is connected with a speed controller 2; the wheel assembly is provided with a driving control assembly which is used for driving the left rear wheel and the right rear wheel of the wheel assembly to run; the drive control assembly comprises a motor 17, a gearbox 16 and an electromagnetic brake 18; the speed controller 2 is connected with the drive control assembly for adjusting the drive speed of the drive control assembly to the left rear wheel and the right rear wheel; preferably, the speed controller 2 may be provided with a plurality of different speed control gears, so that a user can implement acceleration, deceleration or braking operation of the electric wheelchair by operating the different speed control gears; in addition, the output shaft of the motor 17 is further meshed with the input shaft of the gearbox 16, and the output shaft of the gearbox 16 is respectively connected with the left rear wheel and the right rear wheel, so that the speed controller 2 can instruct the gearbox 16 to drive the left rear wheel and the right rear wheel to adjust the motion state according to the control command of a user, and the electromagnetic brake 18 can realize stable and rapid braking operation of the electric wheelchair, thereby improving the running safety of the electric wheelchair.
Referring to fig. 1, the seat assembly includes a seat portion, a seat link plate 7, and a seat height adjustment portion; wherein the seat portion includes a seat back 26 and a seat cushion 27, the seat link plate 7 is provided at a bottom surface of the seat cushion 27, preferably, the seat link plate 7 may have a structure of a bent metal plate, and the bent metal plate is capable of a recoverable elastic deformation property, so that the seat link plate 7 can elastically connect the seat portion and the seat height adjusting portion, thereby improving comfort of the seat portion; the seat height adjusting part comprises a front supporting rod 23, a bottom supporting rod and an adjusting knob 9, wherein the front supporting rod 23 is movably sleeved on the bottom supporting rod, the adjusting knob 9 is used for performing adjustable locking on the front supporting rod 23 and the bottom supporting rod so as to adjust the sleeved length of the front supporting rod 23 on the bottom supporting rod, and thus a user can adjust the height of the seat part according to the actual requirement of the user so as to improve the comfort of the electric wheelchair; in addition, the front support bar 23 is connected to the seat attachment plate 7, and the bottom support bar is connected to the frame of the wheel assembly.
Referring to fig. 1-2, the wheel assembly includes a frame 10, a left front wheel, a right front wheel, a left rear wheel, a right rear wheel, and an anti-roll wheel 12; wherein the left front wheel, the right front wheel, the left rear wheel and the right rear wheel are respectively arranged at four corners of the frame 10; the anti-toppling wheel 12 is connected with the frame 10 through an anti-toppling wheel bracket 20 and is arranged behind the left rear wheel and the right rear wheel, and as the anti-toppling wheel 12 is arranged in the wheel assembly, the whole electric wheelchair can still be balanced without tilting and turning over under the condition that the electric wheelchair is emergently braked or collides with an obstacle, so that the safety of a user taking the electric wheelchair is improved; preferably, the left front wheel, right front wheel, left rear wheel, right rear wheel and anti-toppling wheel 12 may be solid gum wheels.
Referring to fig. 1-2, the steering control assembly and the wheel assembly are also connected by a rear support bar 22; the rear supporting rod 22 is respectively connected with the steering control assembly and the wheel assembly in a folding manner through the supporting rod folding connection part 19 so as to realize the integral folding and storage of the electric wheelchair, so that the electric wheelchair can be folded and stored into a smaller volume for storage under the condition of not being used, and the applicability of the electric wheelchair to different occasions is improved. In addition, a hand-held frame 24 may be provided on the frame 10 of the wheel assembly, which may facilitate the overall lifting motion of the electric wheelchair.
As can be seen from the foregoing embodiments, the electric wheelchair comprises a seat assembly and a wheel assembly, wherein the wheel assembly is used for carrying and driving the seat assembly to move, the seat assembly comprises an armrest, a steering control assembly is connected to the armrest, and the steering control assembly is connected to the armrest and the wheel assembly; when the armrest is under the action of external force, the steering control assembly can be triggered to carry out adaptive traction action, and corresponding steering acting force is applied to the wheel assembly so as to drive the wheel assembly to carry out steering action. Therefore, the electric wheelchair is different from the prior art that the motion state of the electric wheelchair is controlled by adopting a rocker controller such as a T-shaped control rod, and the electric wheelchair combines the armrests on the seat assembly with the steering control assembly, so that a user can drive the electric wheelchair to perform adaptive steering action through the steering control assembly by performing corresponding operation on the armrests, the electric wheelchair takes the armrests to replace the rocker controller as the steering controller, the trouble that the rocker controller is arranged in a special reserved space can be saved, and the electric wheelchair can be rapidly and conveniently steering controlled under the condition that the expensive rocker controller is not used, so that the production cost of the electric wheelchair is greatly reduced, and the whole volume of the electric wheelchair is reduced; in addition, the electric wheelchair is further provided with a folding structure, and the folding structure allows the electric wheelchair to be stored and folded, so that the storage occupied space of the electric wheelchair is conveniently and effectively reduced, and the practical applicability of the electric wheelchair to different occasions is improved.

Claims (7)

1. An electric wheelchair comprising a seat assembly and a wheel assembly, wherein,
The wheel assembly is used for bearing and driving the seat assembly to move, and is characterized in that:
The wheel assembly comprises a frame, a left front wheel, a right front wheel, a left rear wheel, a right rear wheel and an anti-toppling wheel; the left front wheel, the right front wheel, the left rear wheel and the right rear wheel are respectively arranged at four corners of the frame;
The seat assembly includes an armrest;
the handrail is connected with a steering control assembly;
The steering control assembly connects the armrest with the wheel assembly;
When the armrest is under the action of external force, the steering control assembly can be triggered to carry out adaptive traction action, and corresponding steering acting force is applied to the wheel assembly so as to drive the wheel assembly to carry out steering action;
The steering control assembly comprises a first steering control module and a second steering control module; wherein,
The first steering control module and the second steering control module are symmetrically distributed on the left side and the right side of the electric wheelchair;
The first steering control module is connected with a left armrest of the seat assembly, and the second steering control module is connected with a right armrest of the seat assembly;
the first steering control module and the second steering control module are respectively connected with a left front wheel and a right front wheel of the wheel assembly so as to drive the left front wheel and the right front wheel to rotate;
The first steering control module and the second steering control module respectively comprise a steering connecting rod lifting rod, a steering connecting rod lifting main rod, a steering connecting part, a steering control line part, a steering plate and a steering connecting rod which are connected in sequence; wherein,
One end of the steering connecting rod lifting rod is connected with the handrail, and the other end of the steering connecting rod lifting rod is sleeved in the steering connecting rod lifting main rod;
the steering connecting rod lifting main rod is sleeved in the steering main rod;
The steering main rod is rotationally connected with the steering connecting part shaft;
One end of the steering control line part is rotationally connected with the steering connecting part shaft, and the other end of the steering control line part is hinged with the steering plate;
one end of the steering connecting rod is rotationally connected with the steering plate shaft, and the other end of the steering connecting rod is hinged with the corresponding left front wheel or right front wheel;
The steering plate comprises two steering control line hinging points which are distributed symmetrically left and right, and the steering control line parts of the first steering control module and the second steering control module are hinged with the steering plate through the corresponding steering control line hinging points;
The front end part of the steering plate is provided with a first rotating shaft in a penetrating way, the steering connecting rod of the first steering control module is connected with the first rotating shaft on the lower surface of the steering plate, and the steering connecting rod of the second steering control module is connected with the first rotating shaft on the upper surface of the steering plate.
2. The electric wheelchair of claim 1, wherein:
the wheel assembly also comprises a front wheel beam and a main frame;
the front wheel cross beam is respectively connected with the left front wheel and the right front wheel;
The steering connecting rod of the first steering control module is simultaneously and rotatably connected with the left front wheel axle piece and the front wheel beam shaft through the left front wheel axle piece;
The steering connecting rod of the second steering control module is simultaneously and rotatably connected with the right front wheel and the front wheel beam shaft through a right front wheel shaft piece;
the rear end of the steering plate is provided with a second rotating shaft in a penetrating mode, the second rotating shaft is connected with the main frame in a rotating mode, and the rear side of the main frame is connected with the left rear wheel and the right rear wheel.
3. The electric wheelchair of claim 1, wherein:
The steering control line part is provided with a flat structure which can be bent and deformed;
When the armrest receives the exogenic action, the armrest can drive turn to the connecting rod lifter, turn to the mobile jib with turn to connecting portion and carry out translational motion, make turn to control line portion and take place deformation, turn to control line portion can be right because of taking place deformation at this moment the steering effort is applyed to the steering board, thereby makes the steering board is in the effect of steering effort drives left front wheel with right front wheel turns to the action.
4. The electric wheelchair of claim 1, wherein:
the handrail is also provided with a handle which is connected with a speed controller;
the driving control assembly is used for driving the left rear wheel and the right rear wheel of the wheel assembly to run;
the drive control assembly comprises a motor, a gearbox and an electromagnetic brake;
the speed controller is connected with the drive control assembly for adjusting the drive speed of the drive control assembly to the left and right rear wheels.
5. The electric wheelchair of claim 1, wherein:
The seat assembly includes a seat portion, a seat web, and a seat height adjustment portion; wherein,
The seat part comprises a seat backrest and a seat cushion, and the seat connecting plate is arranged on the bottom surface of the seat cushion so as to elastically connect the seat part and the seat height adjusting part;
The seat height adjusting part comprises a front supporting rod, a bottom supporting rod and an adjusting knob, wherein the front supporting rod is movably sleeved on the bottom supporting rod, and the adjusting knob is used for performing adjustable locking on the front supporting rod and the bottom supporting rod so as to adjust the sleeved length of the front supporting rod on the bottom supporting rod;
the front support rod is connected with the seat connecting plate, and the bottom support rod is connected with the frame of the wheel assembly.
6. The electric wheelchair of claim 1, wherein:
The anti-toppling wheel is connected with the frame through an anti-toppling wheel bracket and is arranged behind the left rear wheel and the right rear wheel.
7. The electric wheelchair of claim 1, wherein:
The steering control assembly is also connected with the wheel assembly through a rear supporting rod;
The rear supporting rod is respectively connected with the steering control assembly and the wheel assembly in a foldable manner so as to realize integral folding and storage of the electric wheelchair;
Or alternatively
The frame of the wheel assembly is also provided with a hand-held frame.
CN201910821562.5A 2019-09-02 2019-09-02 Electric wheelchair Active CN110478147B (en)

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CN111700743A (en) * 2020-07-03 2020-09-25 苗文超 An electric wheelchair that can go up and down stairs

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