CN115154077A

CN115154077A - Intelligent electric wheelchair

Info

Publication number: CN115154077A
Application number: CN202210949941.4A
Authority: CN
Inventors: 张志伟; 魏金金; 曹新民; 夏小荣; 朱康乾
Original assignee: Rongjia Medical Technology Group Co ltd
Current assignee: Rongjia Medical Technology Group Co ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2022-10-11

Abstract

The invention discloses an intelligent electric wheelchair, which comprises a chair frame and is characterized in that: the chair frame front portion sets up two universal wheels, chair frame lower part both sides all are provided with the curb plate, and just two curb plates keep away from front wheel knee lever one end and all are provided with the shaft hole, two the relative one side of curb plate all is provided with quill shaft driving motor, and quill shaft driving motor and the coaxial setting in shaft hole, quill shaft driving motor's output shaft inner wall is fixed with the driving sleeve, chair frame top both sides all articulate and are provided with handrail frame, chair frame upper portion is kept away from front wheel knee lever one side and is articulated to have the back, be provided with the locating component who is used for restricting the restriction of back on handrail frame. According to the invention, when the angle of the wheelchair changes, the position of the battery box is adjusted through the electric guide rail, so that the gravity center of the wheelchair is changed, the wheelchair is effectively prevented from toppling over, the wheelchair is intelligent and safe, the structure is simple and reliable, and the wheelchair is not easy to damage.

Description

Intelligent electric wheelchair

Technical Field

The invention relates to the technical field of medical auxiliary instruments, in particular to an intelligent electric wheelchair.

Background

Wheelchairs are chairs equipped with wheels to help replace walking and are classified into electric and manual folding wheelchairs. The wheelchair is an important mobile tool for home rehabilitation, turnover transportation, treatment and outgoing activities of wounded persons, patients and disabled persons, not only meets the requirements of physically disabled persons and persons with mobility disabilities for riding instead of walk, but also is more important to facilitate the family members to move and take care of the patients, so that the patients can do physical exercises and participate in social activities by means of the wheelchair.

The common wheelchair generally comprises a foldable frame, front and rear wheels, left and right kneepads, a pedal, left and right detachable armrests, a handle brake device, a seat, a backrest, a medical image data bag, a bedpan, a urine receiving bag hook, an electric stand and the like. The hand-operated wheelchair is additionally provided with a hand-operated device on the basis of the common wheelchair, and the electric wheelchair is additionally provided with an electronic power assisting system on the basis of the common wheelchair, so that the physical consumption of a user is reduced. On the basis of the electric wheelchair, the intelligent wheelchair has the advantages that the positioning movement, the standing movement, the remote control movement and the related Internet + auxiliary life are increased, but the conventional intelligent electric wheelchair is troublesome in wheel disassembly due to the limitation of a motor, is not required to be disassembled for maintenance, is large in size after being folded, is inconvenient to transfer and transport, cannot be adjusted in real time due to the gravity center of the conventional wheelchair, is easy to topple in some bad road sections, and is provided.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides an intelligent electric wheelchair.

The invention provides an intelligent electric wheelchair, which comprises a wheelchair frame and is characterized in that: the front part of the chair frame is provided with two universal wheels, two sides of the lower part of the chair frame are respectively provided with a side plate, one end of each side plate, far away from a front wheel curved bar, is provided with a shaft hole, one side of each side plate, opposite to the other side, is provided with a hollow shaft driving motor, the hollow shaft driving motor and the shaft hole are coaxially arranged, the inner wall of an output shaft of the hollow shaft driving motor is fixedly provided with a transmission shaft sleeve, two sides of the top part of the chair frame are respectively hinged with a handrail frame, one side of the upper part of the chair frame, far away from the front wheel curved bar, is hinged with a backrest, the handrail frame is provided with a positioning assembly used for limiting the limitation of the backrest, two sides of the chair frame are respectively provided with a driving wheel assembly, the driving wheel assembly comprises a first groove bar arranged on the side wall of the handrail frame, the side wall of the side plate is provided with a second groove bar, the lower part of the second groove bar is of a closed structure, and the same T-shaped sliding block is inserted in the second groove bar and the first groove bar, the upper part of the T-shaped sliding block is provided with a rectangular opening, a supporting arm is hinged in the rectangular opening, the lower end of the supporting arm is provided with a shaft sleeve, one end of the shaft sleeve is hinged with a driving wheel, the driving wheel is coaxially provided with a transmission inserted bar, the transmission inserted bar penetrates through the shaft sleeve to form transmission fit with the transmission shaft sleeve, a transmission assembly is arranged between the transmission inserted bar and the transmission shaft sleeve, the lower part of the chair frame is provided with an electric guide rail, a battery box is fixed on a sliding part of the electric guide rail, an inclination angle sensor is arranged in the battery box, the electric guide rail comprises a metal sliding groove, a driving motor is arranged at one end of the metal sliding groove, a lead screw is fixed on an output shaft of the driving motor, a sliding part is arranged in the metal sliding groove, a lead screw nut is arranged on the sliding part, the lead screw nut is matched with the lead screw to drive the lead screw to rotate through the driving motor, and the sliding part can slide in the metal sliding chute by combining the screw rod nut.

As a further optimization of the technical scheme, the positioning assembly of the intelligent electric wheelchair comprises a positioning pin arranged on the side edge of the backrest, the armrest frame is provided with a plurality of positioning holes distributed in an arc shape, and the positioning holes are matched with the positioning pin.

As a further optimization of the technical scheme, the intelligent electric wheelchair comprises a transmission assembly, wherein the transmission assembly comprises two semicircular positioning blocks arranged in a transmission shaft sleeve, the two semicircular positioning blocks and the transmission shaft sleeve form a positioning penetrating groove matched with a transmission inserted bar, the transmission inserted bar is provided with a through hole along the length direction, an L-shaped bar is inserted into the through hole, one end of the L-shaped bar is fixed with a positioning strip, the two semicircular positioning blocks are respectively provided with a positioning notch matched with the positioning strip, the positioning notches and the positioning penetrating grooves are distributed in a right-angle manner, and one end of the L-shaped bar, which is far away from the positioning strip, is provided with a limiting ring.

As a further optimization of the technical scheme, the intelligent electric wheelchair is characterized in that the driving wheel is axially provided with a spring groove, and a spring is sleeved between the outer wall of the L-shaped rod, close to the spring groove, and the limiting ring.

In this preferred scheme, the spring can provide one along the axial pulling force of drive wheel, realizes the location strip and fixes a position the opening and closely cooperate, and is more stable.

As a further optimization of the technical scheme, according to the intelligent electric wheelchair, two parallel insertion holes are formed in two sides of the front portion of the chair frame, the front wheel bent rods are inserted into the two insertion holes, the locking bolts for fixing the front wheel bent rods are arranged on the side wall of the chair frame, and the two universal wheels are respectively fixed with one ends, far away from the chair frame, of the two front wheel bent rods.

As a further optimization of the technical scheme, the intelligent electric wheelchair is characterized in that the inclination angle sensor is connected with the microprocessor, the microprocessor is electrically connected with the electric guide rail, and the battery box is internally provided with the lead storage battery.

As a further optimization of the technical scheme, the intelligent electric wheelchair is characterized in that the lead storage battery is connected with the switch, and the switch is electrically connected with the hollow shaft driving motor.

As a further optimization of the technical scheme, the first groove and the second groove are both vertically arranged, and the first groove and the second groove are located above the shaft hole.

As a further optimization of the technical scheme, the intelligent electric wheelchair is characterized in that T-shaped slideways matched with the T-shaped sliding blocks are arranged in the second groove strips and the first groove strips.

In conclusion, the beneficial effects of the invention are as follows:

1. the invention provides an intelligent electric wheelchair, which is characterized in that an electric guide rail is arranged and is matched with an inclination angle sensor, and the position of a battery box is adjusted through the electric guide rail when the angle of the wheelchair is changed, so that the gravity center of the wheelchair is changed, the wheelchair is effectively prevented from toppling, and the intelligent electric wheelchair is intelligent and safe.

2. The invention provides an intelligent electric wheelchair, which is simple and reliable in structure and not easy to damage, can conveniently adjust the inclination angle of a backrest and adjust the sitting posture through the arranged positioning assembly, realizes the positioning of the backrest through a handrail frame, realizes the disassembly of a driving wheel by matching the arranged T-shaped sliding block, a first groove strip and a second groove strip, is convenient to maintain and repair the driving wheel, reduces the storage volume of the wheelchair for transferring and carrying, and is more convenient to transfer.

Drawings

Fig. 1 is a schematic structural diagram of an intelligent electric wheelchair according to the present invention;

FIG. 2 is a schematic structural view of an armrest frame of an intelligent electric wheelchair according to the present invention;

FIG. 3 is a schematic structural view of an intelligent electric wheelchair frame according to the present invention;

FIG. 4 is a schematic structural view of a driving wheel of an intelligent electric wheelchair according to the present invention;

FIG. 5 is a schematic structural view of a driving shaft sleeve of an intelligent electric wheelchair according to the present invention;

FIG. 6 is a schematic structural view of an L-shaped rod of an intelligent electric wheelchair according to the present invention;

FIG. 7 is a schematic view of the structure of the lower part of an intelligent electric wheelchair;

fig. 8 is a schematic structural diagram of a T-shaped sliding block and a supporting arm of the intelligent electric wheelchair according to the present invention.

In the figure: 1. a chair frame; 2. a drive wheel; 3. a universal wheel; 4. a front wheel curved bar; 5. a side plate; 6. a handrail frame; 7. a backrest; 8. positioning pins; 9. a first channel strip; 10. positioning holes; 11. a second channel strip; 12. a shaft hole; 13. a battery box; 14. a driving shaft sleeve; 15. a positioning bar; 16. a transmission inserted link; 17. an L-shaped rod; 18. positioning the notch; 19. positioning the through groove; 20. an electric rail; 21. a limiting ring; 22. a spring; 23. a T-shaped slider; 24. a support arm; 25. a shaft sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to fig. 1 to 8 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 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.

Referring to fig. 1-8, an intelligent electric wheelchair comprises a chair frame 1, wherein two universal wheels 3 are arranged at the front part of the chair frame 1, two insertion holes which are arranged in parallel are arranged at two sides of the front part of the chair frame 1, front wheel bent rods 4 are inserted into the two insertion holes, locking bolts for fixing the front wheel bent rods 4 are arranged on the side wall of the chair frame 1, the two universal wheels 3 are respectively fixed with one ends of the two front wheel bent rods 4 far away from the chair frame 1, side plates 5 are arranged at two sides of the lower part of the chair frame 1, shaft holes 12 are arranged at one ends of the two side plates 5 far away from the front wheel bent rods 4, hollow shaft driving motors are arranged at two opposite sides of the two side plates 5 and are coaxial with the shaft holes 12, transmission shaft sleeves 14 are fixed on the inner walls of output shafts of the hollow shaft driving motors, handrail frames 6 are hinged at two sides of the top part of the chair frame 1, the upper part of the chair frame 1 is hinged with a backrest 7 on one side far away from a front wheel curved bar 4, driving wheel assemblies are arranged on two sides of the chair frame 1 and comprise a first groove bar 9 arranged on the side wall of a handrail frame 6, a second groove bar 11 is arranged on the side wall of a side plate 5, the first groove bar 9 and the second groove bar 11 are both vertically arranged, the first groove bar 9 and the second groove bar 11 are positioned above a shaft hole 12, the lower part of the second groove bar 11 is of a closed structure, a same T-shaped sliding block 23 is inserted into the second groove bar 11 and the first groove bar 9, a rectangular opening is arranged on the upper part of the T-shaped sliding block 23, a supporting arm 24 is hinged in the rectangular opening, a shaft sleeve 25 is arranged at the lower end of the supporting arm 24, a driving wheel 2 is hinged with one end of the shaft sleeve 25, a driving inserted rod 16 is coaxially arranged on the driving wheel 2, the driving inserted rod 16 penetrates through the shaft sleeve 25 to form driving fit with the driving shaft sleeve 14, a transmission assembly is arranged between the transmission inserted bar 16 and the transmission shaft sleeve 14.

Referring to fig. 4, 5 and 6, the transmission assembly includes two semicircular positioning blocks disposed in the transmission shaft sleeve 14, and the two semicircular positioning blocks and the transmission shaft sleeve 14 form a positioning through groove 19 adapted to the transmission inserted bar 16, the transmission inserted bar 16 is provided with a through hole along the length direction, and an L-shaped bar 17 is inserted into the through hole, one end of the L-shaped bar 17 is fixed with a positioning strip 15, two semicircular positioning blocks are all provided with positioning notches 18 adapted to the positioning strip 15, the positioning notches 18 and the positioning through groove 19 are distributed at right angles, one end of the L-shaped bar 17 away from the positioning strip 15 is provided with a limiting ring 21, the driving wheel 2 is provided with a spring groove along the axial direction, and a spring 22 is sleeved between the outer wall of the L-shaped bar 17 and the limiting ring 21, and the spring 22 can provide a pulling force along the axial direction of the driving wheel 2, so that the positioning strip 15 and the positioning notch 18 are tightly matched, and more stably.

Referring to the attached drawing 8, the lower portion of the chair frame 1 is provided with an electric guide rail 20, a battery box 13 is fixed on a sliding part of the electric guide rail 20, an inclination angle sensor is arranged in the battery box 13 and connected with a microprocessor, the microprocessor and the electric guide rail 20 form an electric connection, a lead storage battery is arranged in the battery box 13 and connected with a switch, the switch and a hollow shaft driving motor form an electric connection, the electric guide rail comprises a metal sliding groove, a driving motor is arranged at one end of the metal sliding groove, a lead screw is fixed on an output shaft of the driving motor, a sliding part is arranged in the metal sliding groove in a sliding mode, a lead screw nut is arranged on the sliding part and matched with the lead screw, the lead screw is driven by the driving motor to rotate the lead screw, and the sliding part can slide in the metal sliding groove by combining the lead screw nut.

Referring to the attached drawing 1, a positioning assembly used for limiting the limitation of the backrest 7 is arranged on the armrest frame 6 and comprises a positioning pin 8 arranged on the side edge of the backrest 7, a plurality of positioning holes 10 distributed in an arc shape are arranged on the armrest frame 6, and the positioning holes 10 are matched with the positioning pin 8.

The working principle is as follows: in the working process, the battery box 13 arranged at the lower part of the chair frame 1 can be adjusted by the electric guide rail 20, thereby adjusting the gravity center position of the wheelchair and avoiding the wheelchair from overturning, and through the arranged inclination angle sensor, the inclination state of the wheelchair can be actively fed back, and the microprocessor controls the electric guide rail 20 to work so as to adjust the position of the battery box 13, thereby adjusting the gravity center distribution of the wheelchair, being more intelligent, removing the locking bolt on the chair frame 1, being capable of taking down the front wheel curved bar 4, the separation of the positioning strip 15 and the positioning gap 18 is realized by pressing and rotating the L-shaped rod 17, then the positioning strip 15 is superposed with the positioning through groove 19, the separation of the transmission inserted bar 16 and the transmission shaft sleeve 14 is realized by rotating the supporting arm 24, then the T-shaped sliding block 23 is scribed upwards to realize the separation of the T-shaped sliding block 23, the second groove strip 11 and the first groove strip 9, realize the quick assembly and disassembly of the driving wheel 2, then the armrest frame 6 can be rotated, and then the backrest 7 and the armrest frame 6 can be rotated to realize folding, thereby reducing the storage volume of the wheelchair, the driving wheel 2 is convenient to maintain, replace and repair through the driving wheel 2 which is convenient to disassemble, the operation is simple, in the assembling process, the limitation of the angle of the backrest 7 is realized by rotating the armrest frame 6 to the vertical state and inserting the positioning pin 8 on the backrest 7 into the proper positioning hole 10, then the T-shaped slider 23 is inserted into the first slot 9, and a portion of the T-shaped slider 23 is inserted into the second slot 11, the movement restriction of the handle frame 6 is achieved, then the supporting arm 24 is rotated, the transmission inserted bar 16 is inserted into the positioning through groove 19, the positioning strip 15 is inserted into the positioning gap 18 by pressing and rotating the L-shaped rod 17, and the transmission matching between the driving wheel 2 and the transmission shaft sleeve 14 is realized.

For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides an electronic wheelchair of intelligence, includes chair frame (1), its characterized in that: the front portion of the chair frame (1) is provided with two universal wheels (3), two sides of the lower portion of the chair frame (1) are respectively provided with a side plate (5), one ends, far away from a front wheel curved bar (4), of the two side plates (5) are respectively provided with a shaft hole (12), one opposite side of the two side plates (5) is respectively provided with a hollow shaft driving motor, the hollow shaft driving motors and the shaft holes (12) are coaxially arranged, a transmission shaft sleeve (14) is fixed on the inner wall of an output shaft of each hollow shaft driving motor, two sides of the top of the chair frame (1) are respectively hinged with a handrail frame (6), one side, far away from the front wheel curved bar (4), of the upper portion of the chair frame (1) is hinged with a backrest (7), a positioning assembly used for limiting the backrest (7) is arranged on the handrail frame (6), and two sides of the chair frame (1) are respectively provided with a driving wheel assembly;

the driving wheel assembly comprises a first groove strip (9) arranged on the side wall of a handrail frame (6), a second groove strip (11) is arranged on the side wall of a side plate (5), the lower portion of the second groove strip (11) is of a closed structure, a same T-shaped sliding block (23) is arranged in the second groove strip (11) and the first groove strip (9) in an inserted mode, a rectangular opening is formed in the upper portion of the T-shaped sliding block (23), a supporting arm (24) is hinged in the rectangular opening, the lower end of the supporting arm (24) is provided with an axle sleeve (25), one end of the axle sleeve (25) is hinged to a driving wheel (2), the driving wheel (2) is coaxially provided with a driving inserted rod (16), the driving inserted rod (16) penetrates through the axle sleeve (25) and forms transmission fit with a transmission axle sleeve (14), a transmission assembly is arranged between the driving inserted rod (16) and the transmission axle sleeve (14), an electric guide rail (20) is arranged on the lower portion of the chair frame (1), a sliding piece of the electric guide rail (20), and an inclination angle sensor is arranged in the battery box (13).

2. The intelligent electric wheelchair as claimed in claim 1, wherein the positioning assembly comprises a positioning pin (8) arranged on the side of the backrest (7), a plurality of positioning holes (10) distributed in an arc shape are arranged on the armrest frame (6), and the positioning holes (10) are matched with the positioning pin (8).

3. The intelligent electric wheelchair as claimed in claim 2, wherein the transmission assembly comprises two semicircular positioning blocks arranged in the transmission shaft sleeve (14), the two semicircular positioning blocks and the transmission shaft sleeve (14) form a positioning through groove (19) matched with the transmission inserted bar (16), the transmission inserted bar (16) is provided with a through hole along the length direction, an L-shaped bar (17) is inserted into the through hole, one end of the L-shaped bar (17) is fixed with a positioning strip (15), the two semicircular positioning blocks are respectively provided with a positioning notch (18) matched with the positioning strip (15), the positioning notches (18) and the positioning through grooves (19) are distributed in a right angle, and one end of the L-shaped bar (17) far away from the positioning strip (15) is provided with a limiting ring (21).

4. An intelligent electric wheelchair as claimed in claim 3, wherein the driving wheel (2) is provided with a spring groove along the axial direction, and a spring (22) is sleeved on the outer wall of the L-shaped rod (17) close to the position between the spring groove and the limiting ring (21).

5. An intelligent electric wheelchair as claimed in claim 4, wherein two parallel insertion holes are arranged on two sides of the front part of the chair frame (1), the front wheel curved bar (4) is inserted into each of the two insertion holes, the side wall of the chair frame (1) is provided with a locking bolt for fixing the front wheel curved bar (4), and the two universal wheels (3) are respectively fixed with one ends of the two front wheel curved bars (4) far away from the chair frame (1).

6. An intelligent electric wheelchair as claimed in claim 5, wherein a microprocessor is connected to the inclination angle sensor and forms an electric connection with the electric guide rail (20), and a lead storage battery is arranged in the battery box (13).

7. The intelligent electric wheelchair as claimed in claim 6, wherein a switch is connected to the lead accumulator and forms an electrical connection with the hollow shaft drive motor.

8. An intelligent electric wheelchair as claimed in claim 7, wherein the first and second channel bars (9, 11) are vertically arranged, and the first and second channel bars (9, 11) are located above the axle hole (12).

9. The intelligent electric wheelchair as claimed in claim 8, wherein T-shaped slideways matched with the T-shaped sliding blocks (23) are arranged in the second groove strips (11) and the first groove strips (9).