CN114767408A - Intelligent electric folding wheelchair - Google Patents

Abstract

The application discloses electronic folding wheelchair of intelligence relates to the instrument field of riding instead of walk. Including two front wheel dead levers, two rear wheel dead levers, the seat support, the back support, first electronic flexible push rod, electronic flexible push rod of second and connecting piece, the one end and the two front wheel dead levers of second chassis are articulated, the other end is articulated with first chassis, the lower part and the two rear wheel dead levers of first chassis are articulated, upper portion is articulated with the lower part of connecting piece, the rear portion of seat support and the lower part of back support all articulate with the upper portion of connecting piece, the one end of first electronic flexible push rod is articulated with the front portion of seat support, the other end is articulated with the upper portion of first chassis, the one end of electronic flexible push rod of second is articulated with the upper portion of back support, the other end is articulated with the connecting piece. This application both the first electronic flexible push rod of accessible drives front wheel dead lever, back support and connecting piece motion, realizes the folding of whole wheelchair and expandes, and the electronic flexible push rod of accessible second drives the upset of back support again, realizes back angle electric regulation.

Description

Intelligent electric folding wheelchair

Technical Field

The application relates to the field of travel tools, in particular to an intelligent electric folding wheelchair.

Background

For the disabled, the wheelchair is the main vehicle for the disabled to go out, and for saving the occupied space, many wheelchairs in the prior art have been designed into a manually foldable mode, and meanwhile, in order to further facilitate the operation of the disabled, an electrically foldable wheelchair also appears, for example, the application number is: 2017101767917 to be used as a wheelchair. However, in the research process of the present application, the inventor finds that the backrest angle of the existing wheelchair is generally not adjustable, and the user cannot adjust the backrest angle according to the use requirement, which affects the comfort level of the wheelchair.

Disclosure of Invention

The application provides an electronic folding wheelchair of intelligence to solve the problem that provides in the background art.

An intelligent electric folding wheelchair is characterized by comprising two front wheel fixing rods respectively connected with front wheels, two rear wheel fixing rods respectively connected with rear wheels, a seat support, a backrest support, a first electric telescopic push rod, a second electric telescopic push rod and a connecting piece, wherein a first underframe and a second underframe are arranged below the seat support, one end of the second underframe is respectively hinged with the two front wheel fixing rods, the other end of the second underframe is hinged with the first underframe, the lower part of the first underframe is respectively hinged with the two rear wheel fixing rods, the upper part of the first underframe is hinged with the lower part of the connecting piece, the rear part of the seat support and the lower part of the backrest support are both hinged with the upper part of the connecting piece, one end of the first electric telescopic push rod is hinged with the front part of the seat support, the other end of the first electric telescopic push rod is hinged with the upper part of the first underframe, one end of the second electric telescopic push rod is hinged with the upper part of the backrest support, the other end of the second electric telescopic push rod is hinged with the connecting piece. According to the technical scheme, the electronic folding wheelchair of intelligence that this application provided, drive the front wheel dead lever through first electronic flexible push rod on the one hand, the seat support, the back support, first chassis, the folding and the expansion of second chassis and connecting piece, thereby realize the folding and the expansion of whole wheelchair, no longer need the handicapped personage oneself to do one's hands can accomplish foldingly, it is light convenient, the practicality of wheelchair has greatly been improved, on the other hand drives the back support through the electronic flexible push rod of second and overturns, thereby realize the electric control of back angle, the travelling comfort that the wheelchair used has been improved greatly.

Preferably, the hinge joint of the second underframe and the first underframe is a hinge joint of two underframe, the hinge joint of the lower part of the first underframe and the two rear wheel fixing rods is a lowest hinge joint of the first underframe, the hinge joint of the upper part of the first underframe and the lower part of the connecting piece is a second hinge joint of the connecting piece, and the hinge joint of the two underframe is positioned between the second hinge joint of the connecting piece and the lowest hinge joint of the first underframe in height. According to the technical scheme, the two chassis hinged parts are arranged between the second hinged part of the connecting piece and the lowest hinged part of the first chassis, so that the first electric telescopic push rod can be more conveniently driven to overturn the connecting piece and the first chassis when stretching.

Preferably, the rear wheel fixing rod is provided with an anti-tilt wheel and a support for mounting the anti-tilt wheel at the rear part, and the anti-tilt wheel is rotatably connected with the support and can be turned and positioned up and down around the support. According to the technical scheme, the anti-tilt wheel can be used for preventing the electronic folding wheelchair in the unfolding state from tilting and protecting the electronic folding wheelchair, the use safety of the electronic folding wheelchair is improved, the anti-tilt wheel is designed into a structure capable of being turned up and down, the electronic folding wheelchair in the folding state can be supported in a standing mode, and the use convenience of the wheelchair is greatly improved.

Preferably, a headrest is arranged on the upper portion of the backrest support, and a height adjusting mechanism and an angle adjusting mechanism are mounted on the headrest. According to the technical scheme, the user can conveniently adjust the headrest to the comfortable height and angle by arranging the height adjusting mechanism and the angle adjusting mechanism, so that the use comfort of the electric folding wheelchair is greatly improved.

Preferably, the seat support comprises a first connecting section and a second connecting section connected with the first connecting section, the plane where the second connecting section is located extends along the rear upper portion of the backrest support, and the second connecting section is hinged to the connecting piece. According to the technical scheme, the seat support, the backrest support and the connecting piece can be more conveniently connected through the second connecting section, and the installation operation is greatly simplified.

Preferably, the electric folding wheelchair comprises armrests which are in a T shape, the T shape is provided with a third connecting section and a fourth connecting section, one end of the fourth connecting section is hinged to the middle of the third connecting section, the third connecting section is horizontally arranged, one end of the third connecting section is hinged to the backrest support, and the other end of the fourth connecting section is hinged to the seat support. According to the technical scheme, the third connecting section and the fourth connecting section which are respectively hinged with the seat support and the backrest support are arranged, so that the electric folding wheelchair can drive the handrail to be folded synchronously when being folded, and the folding efficiency of the electric folding wheelchair is improved.

Preferably, the connecting piece comprises an upper cross rod, the upper cross rod protrudes towards the rear of the electric folding wheelchair, and the end part of the second electric telescopic push rod is hinged with the upper cross rod. According to the technical scheme, the triangular structure is formed among the electric telescopic push rod of the second, the backrest support and the connecting piece, so that stable support can be provided for the backrest support well, and the use safety is improved.

Preferably, the front end side part of the seat support is provided with an extension part, and the extension part and the upper end of the front wheel fixing rod are hinged with the front end of the rear wheel fixing rod. According to the technical scheme, the extension part and the front wheel fixing rod are hinged to the rear wheel fixing rod, the second chassis can drive the front wheel fixing rod to overturn conveniently, and therefore the integral folding of the electric folding wheelchair is achieved.

Preferably, the electric folding wheelchair comprises a controller and an electrical box, wherein the controller and the electrical box are both mounted on the second underframe, the electrical box is connected with the controller, and the first electric telescopic push rod and the second electric telescopic push rod are both connected with the controller. According to the technical scheme, the controller and the electric appliance box are installed on the second bottom frame, the movement space can be provided for the wheelchair to be folded, interference is avoided, the controller can be used for effectively controlling the first electric telescopic push rod and the second electric telescopic push rod, and the use convenience of the wheelchair is improved.

Preferably, the front wheel fixing rod comprises a fifth connecting section and a sixth connecting section connected with the fifth connecting section, wherein the fifth connecting section is arc-shaped, the concave surface of the arc faces the rear of the electric folding wheelchair, and the sixth connecting section is a wheel carrier used for connecting wheels. According to the technical scheme, the fifth connecting section is designed into the arc shape with the concave surface facing the rear part of the electric folding wheelchair, so that the front wheel fixing rod can be more easily folded backwards when the wheelchair is folded.

Preferably, a pedal part is arranged at the front end of the second underframe. According to the technical scheme, the feet of the user can be effectively supported by the pedal part, so that the comfort of the electric folding wheelchair is improved.

Drawings

FIG. 1 is a front perspective view of an intelligent electrically powered folding wheelchair as provided herein;

FIG. 2 is a side view of an intelligent electrically powered folding wheelchair as provided herein;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

FIG. 4 is a rear perspective view of the intelligent electrically powered folding wheelchair provided by the present application;

FIG. 5 is a schematic view of the connection between the footrest and the second frame of the intelligent electric folding wheelchair;

FIG. 6 is a schematic view of a rear wheel securing lever in the intelligent electric folding wheelchair according to the present application;

fig. 7 is a schematic connection diagram of a fifth connecting section, a second chassis, a first chassis and a rear wheel fixing rod in the intelligent electric folding wheelchair provided by the present application;

FIG. 8 is a schematic view of a seat support in the intelligent electrically powered collapsible wheelchair provided by the present application;

FIG. 9 is a schematic view of the connection between the seat support, the second chassis, the first chassis and the first electric telescopic rod in the intelligent electric folding wheelchair provided by the present application;

FIG. 10 is a schematic view of the connection between the seat support, the first chassis, the connector and the backrest support in the intelligent electric folding wheelchair according to the present application;

FIG. 11 is an enlarged view of a portion of FIG. 10 at B;

FIG. 12 is a schematic view of the connection between the first frame and the connection member of the intelligent electric folding wheelchair;

FIG. 13 is a schematic view of the connection between the connecting member, the backrest support and the second electric telescopic rod in the intelligent electric folding wheelchair;

FIG. 14 is a schematic view of the connection between the second chassis, the controller, the electrical box and the battery compartment in the intelligent electric folding wheelchair provided by the present application;

FIG. 15 is a schematic view of the connection between the armrests, the backrest support and the seat support in the intelligent electric folding wheelchair according to the present application;

FIG. 16 is a schematic view of the connection between the backrest support and the head rest of the intelligent electric folding wheelchair according to the present application;

FIG. 17 is a schematic view of the connection between the rear wheel fixing rod and the anti-roll wheel in the intelligent electric folding wheelchair;

FIG. 18 is a schematic view of a support in the intelligent electrically powered folding wheelchair provided by the present application;

FIG. 19 is a schematic view of an anti-tip wheel and mounting bar of the intelligent electrically powered folding wheelchair provided by the present application;

FIG. 20 is a schematic view of the anti-tipping wheels in an upturned configuration in an intelligent powered folding wheelchair as provided by the present application;

FIG. 21 is a schematic view of the intelligent powered folding wheelchair provided by the present application after the backrest support has been flipped backwards;

FIG. 22 is a schematic view of the intelligent powered folding wheelchair provided by the present application after folding;

fig. 23 is a schematic view of the intelligent electric folding wheelchair provided by the present application in a folded standing state.

Wherein: 10-front wheel, 101-front wheel securing lever, 102-fifth connecting section, 103-sixth connecting section, 104-headrest, 20-rear wheel, 201-rear wheel securing lever, 202-sleeve, 203-first protrusion, 204-spring, 205-slide bar, 206-first stopper, 207-support, 208-anti-tip wheel, 209-mounting hole, 210-positioning hole, 211-mounting bar, 212-positioning pin, 213-backing pin button, 30-seat bracket, 301-first connecting section, 302-second connecting section, 303-extension, 304-first chassis, 305-second chassis, 40-backrest bracket, 401-backrest crossbar, 402-third connecting section, 403-fourth connecting section, 404-height adjustment lever, 405-a locking piece, 406-an angle adjusting rod, 407-a fastening piece, 50-a first electric telescopic push rod, 60-a second electric telescopic push rod, 70-a connecting piece, 701-an upper cross rod, 702-a lower cross rod, 703-a second protruding part, 704-a second stopping part, 80-a handrail, 90-an electrical box, 901-a controller, 902-a battery bin and 100-a pedal part.

Detailed Description

The following detailed description of the embodiments of the invention, taken in conjunction with the accompanying drawings, is not intended to limit the scope of the invention. The terms "front", "rear", "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "first" and "second" are used merely to simplify the description of the words for distinguishing between similar objects and are not to be construed as specifying a sequential relationship between sequences.

Referring to fig. 1, 2 and 4, the present application provides an intelligent electric folding wheelchair, which includes two front wheel fixing rods 101 respectively connected with front wheels 10, two rear wheel fixing rods 201 respectively connected with rear wheels 20, a seat support 30, a backrest support 40, a first electric telescopic push rod 50, a second electric telescopic push rod 60 and a connecting piece 70, wherein a seat cushion can be installed on the seat support 30, a backrest cushion can be installed on the backrest support 40, and the seat cushion and the backrest cushion can have functions of massage, heating, ventilation and the like.

Referring to fig. 8 and 10, preferably, the seat support 30 includes a first connecting section 301 and a second connecting section 302 connected to the first connecting section 301, the second connecting section 302 extends along the upper and rear direction of the backrest support 40, and the second connecting section 302 and the lower portion of the backrest support 40 are both hinged to the connecting member 70, where the hinge is the first hinge of the connecting member 70.

Referring to fig. 2, 6 to 8, the front wheel 10 is connected to the lower end of the corresponding front wheel fixing rod 101, preferably, the front wheel fixing rod 101 includes a fifth connecting section 102 and a sixth connecting section 103 connected to the fifth connecting section 102, the sixth connecting section 103 is a wheel frame for fixing the front wheel 10, the front wheel 10 is fixed to the lower end of the wheel frame, and the fifth connecting section 102 is a circular arc, the concave surface of the circular arc faces the rear of the electric folding wheelchair. The fifth connecting section 102 is designed to be arc-shaped with a concave surface facing the rear of the electric folding wheelchair, so that the front wheel fixing rod 101 can be folded backwards more easily when the electric folding wheelchair is folded; the rear wheels 20 are connected to the rear ends of the corresponding rear wheel fixing rods 201, the front end of each rear wheel fixing rod 201 is hinged to the upper end of the fifth connecting section 102 of the corresponding front wheel fixing rod 101, and the hinged positions are the first hinged positions of the front wheel fixing rods 101 respectively. Specifically, the side portions of the two sides of the first connecting section 301 are provided with an extending portion 303, the front end of each rear wheel fixing rod 201 is fixed with a sleeve 202, one side of the sleeve 202 is hinged to one end of the extending portion 303, which is far away from the first connecting section 301, and the other side of the sleeve 202 is hinged to the upper end of the fifth connecting section 102, that is, the fifth connecting section 102 can rotate around the sleeve 202.

Referring to fig. 7, 9, 10, 12 and 13, the connecting member 70 includes an upper cross bar 701 and a lower cross bar 702 which are vertically distributed, the upper cross bar 701 protrudes toward the rear of the electric folding wheelchair, a first chassis 304 and a second chassis 305 are disposed below the seat support 30, the first chassis 304 is disposed below the rear of the seat support 30, and the upper portion of the first chassis is hinged to the lower cross bar 702 of the connecting member 70, the hinge is a second hinge of the connecting member 70, and the second hinge of the connecting member 70 is lower than the first hinge of the connecting member 70; the lower part of the first chassis 304 is hinged with the two rear wheel fixing rods 201 respectively, and the hinged position is the lowest hinged position of the first chassis 304; the second chassis 305 is arranged along the front-back direction of the electric folding wheelchair, and the rear part of the second chassis 305 is hinged with the first chassis 304, the hinged position is a hinged position of the two chassis, and the hinged position of the two chassis is positioned between the second hinged position of the connecting piece 70 and the lowest hinged position of the first chassis 304 in height; the front part of the second chassis 305 is hinged with the two front wheel fixing rods 101 respectively, the hinged parts are second hinged parts of the front wheel fixing rods 101 respectively, and the second hinged parts of the front wheel fixing rods 101 are lower than the first hinged parts of the two front wheel fixing rods 101 respectively; one end of the first electric telescopic push rod 50 is hinged with the front part of the seat support 30, and the other end of the first electric telescopic push rod 50 is hinged with the upper part of the first underframe 304; one end of the second electric telescopic push rod 60 is hinged with the upper cross bar 701, and the other end is hinged with the upper part of the backrest support 40, preferably, the upper part of the backrest support 40 is provided with a backrest cross bar 401, and the end of the second electric telescopic push rod 60 is hinged with the backrest cross bar 401. Referring to fig. 2, it can be seen that a triangular structure is formed among the second electric telescopic pushing rod 60, the backrest support 40 and the connecting member 70, so as to better provide stable support for the backrest support 40, thereby improving the safety in use.

Referring to fig. 15, the electric folding wheelchair provided by the present application may further include an armrest 80, preferably, the armrest 80 has a "T" shape having a third connecting section 402 and a fourth connecting section 403 having one end hinged to the middle of the third connecting section 402, the third connecting section 402 is horizontally disposed, and has one end hinged to the back support frame 40, and the other end of the fourth connecting section 403 hinged to the side of the seat support frame 30. This arrangement ensures that the armrest 80 can be folded relative to the back bracket 40 and the seat bracket 30 at the same time.

Referring to fig. 14, the electric folding wheelchair provided by the present application further includes an electrical box 90 and a controller 901, both of the electrical box 90 and the controller 901 are mounted on the second chassis 305. Preferably, a battery compartment 902 is arranged at the lower part of the second chassis 305, the controller 901 is fixedly installed at one end of the battery compartment 902, the electrical box 90 is detachably installed at the other end of the battery compartment 902, and when the electrical box 90 is installed inside the battery compartment 902, the electrical box 90 is electrically connected with the controller 901 and supplies power to the controller 901; the first electric telescopic push rod 50 and the second electric telescopic push rod 60 are connected to the controller 901 and controlled by the controller 901.

Referring to fig. 5, preferably, the front end portion of the second chassis 305 may further be provided with a footrest portion 100, and the footrest portion 100 is hinged to the front end portion of the second chassis 305. When a user sits on the wheelchair, the footrest 100 can be used to support the feet of the user to improve the comfort of the electric folding wheelchair, and also to rotatably store the electric folding wheelchair when folded.

In the present embodiment, the rear wheel 20 is a driving wheel and is driven by a brushless speed-reducing motor/a brush speed-reducing motor, which is disposed outside the rear wheel 20, but may be a hub motor as needed. Here, the front wheel 10 may be a driving wheel, or both the front wheel 10 and the rear wheel 20 may be driving wheels.

Referring to fig. 3, in order to make the electric folding wheelchair more stable after being unfolded, in the present embodiment, a first protruding part 203 is arranged at the position of the rear wheel fixing rod 201 close to the front end, a spring 204 and a sliding rod 205 are fixed on the first protruding part 203, the sliding rod 205 is slidably arranged on the first protruding part 203, the spring 204 is sleeved on the sliding rod 205, one end of the spring 204 abuts against the first protrusion 203, the other end abuts against the end of the sliding rod 205, the upper end of the fifth connecting section 102 is provided with a first stopper 206, when the electric folding wheelchair is in the unfolded state, the first stopping portion 206 of the fifth connecting section 102 abuts against the sliding rod 205 and the spring 204, in the running process of the electric folding wheelchair, the upper end of the fifth connecting section 102, namely the upper end of the front wheel fixing rod 101, can be prevented from suddenly rotating backwards, so that the electric folding wheelchair is unbalanced and a user sitting on the electric folding wheelchair can be prevented from being injured.

The front end of the armrest 80 is provided with an operating component, which includes an operating rocker, a key, an illuminating lamp, etc. connected to the controller 901. Preferably, the steering assembly is detachably mounted to the front end of the armrest 80.

Referring to fig. 11, the bottom rail 702 is provided with a second protrusion 703, the second protrusion 703 is also provided with a spring 204 and a sliding rod 205, the sliding rod 205 is slidably mounted on the second protrusion 703, the spring 204 is sleeved on the sliding rod 205, one end of the spring 204 abuts against the second protrusion 703, the other end abuts against the end of the sliding rod 205, and the first chassis 304 is provided with a second stopping portion 704 corresponding to the second protrusion 703. This design can support and cushion seat support 30 effectively, reduces the influence of jolting, shake to the user and take, and then improves the travelling comfort that electronic folding wheelchair used.

Referring to fig. 17 to 20, the rear portion of the electric folding wheelchair is provided with an anti-tip assembly, preferably, the rear portion of the rear wheel fixing rod 201 is provided with a support 207 and an anti-tip wheel 208, the support 207 is provided with a mounting hole 209 for mounting the anti-tip wheel 208, the anti-tip wheel 208 is rotatably mounted in the mounting hole 209 through a mounting rod 211, the mounting hole 209 is provided with positioning holes 210 distributed up and down, the mounting rod 211 is provided with positioning pins 212 adapted to the positioning holes 210, the positioning pins 212 can be respectively inserted into the positioning holes 210 distributed up and down to position the anti-tip wheel 208 up and down, and the mounting rod 211 is further provided with pin-withdrawing keys 213 for separating the positioning pins 212 from the positioning holes 210. Through the design, when the anti-tilt wheel 208 is in the position of falling the upset, the anti-tilt wheel 208 can provide anti-tilt protection for electronic folding wheelchair, when the anti-tilt wheel 208 is in the position of falling the upset, the anti-tilt wheel 208 can provide the support of standing after electronic folding wheelchair is folded, need not that the user is hand to maintain and stand, has improved electronic folding wheelchair's convenience of use.

Referring to fig. 16, a headrest 104 is provided on the upper portion of the backrest support 40, and the height adjustment mechanism and the angle adjustment mechanism are installed to the headrest 104. Preferably, the height adjusting structure comprises a height adjusting rod 404 and a locking member 405 mounted on the upper portion of the backrest support 40, the height adjusting rod 404 is mounted on the locking member 405 and can slide up and down, and the locking member 405 can limit and fix the height adjusting rod 404; the angle adjusting mechanism comprises a multi-section angle adjusting rod 406, the upper part of the angle adjusting rod 406 is connected with the headrest 104, the lower part of the angle adjusting rod 406 is connected with the height adjusting rod 404, fasteners 407 are arranged among the multi-section angle adjusting rods 406, between the angle adjusting rod 406 and the headrest 104 and between the angle adjusting rod 406 and the height adjusting rod 404, and the multidirectional adjustment and positioning of the angle of the headrest 104 can be realized by adjusting the fasteners 407.

Referring to fig. 21 to 23, when a user needs to adjust the backrest angle, an instruction is sent to the controller 901 through the control assembly, the controller 901 controls the second electric telescopic push rod 60 to retract, and the backrest support 40 is driven by the second electric telescopic push rod 60 to rotate backwards with the first hinge joint of the connecting member 70 (i.e., the hinge joint of the second connecting section 302, the backrest support 40 and the connecting member 70) as a fulcrum until the backrest angle is adjusted to the backrest angle required by the user; when a user needs to fold the entire wheelchair, an instruction is sent to the controller 901 through the control assembly, the controller 901 firstly controls the second electric telescopic push rod 60 to extend out to drive the backrest support 40 to rotate to an initial position, secondly the controller 901 controls the first electric telescopic push rod 50 to extend out, the first chassis 304 is driven by the first electric telescopic push rod 50 to turn backwards with the lowest hinged part of the first chassis 304 (namely the hinged part of the first chassis 304 and the rear wheel fixing rod 201) as a fulcrum, the first chassis 304 turns backwards to drive the bottom of the connecting piece 70 to turn backwards with the first hinged part of the connecting piece 70 as a fulcrum, the bottom of the connecting piece 70 turns backwards to drive the backrest support 40 and the second electric telescopic push rod 60 to turn forwards with the first hinged part of the connecting piece 70 as a hinged point, until the backrest support 40 approaches the seat support 30, namely the backrest folding is completed, the armrest 80 is also driven by the backrest support 40 to fold towards the seat support 30, meanwhile, the first chassis 304 is turned backwards to drive the second chassis 305 to move backwards, and the second chassis 305 is moved backwards to drive the front wheel fixing rod 101 to turn backwards with the first hinge of the front wheel fixing rod 101 (i.e. the hinge of the rear wheel fixing rod 201 and the fifth connecting section 102) as a fulcrum, so as to complete the folding of the front wheel 10 and the front wheel fixing rod 101. When a user needs to unfold the entire wheelchair, the controller 901 sends an instruction through the control assembly, and the controller 901 controls the first electric telescopic push rod 50 to perform an opposite operation, so that the entire wheelchair can be unfolded, and the detailed process is not repeated.

It should be noted that the initial position of the backrest support 40 can be preset by the second electric telescopic ram 60, for example, when the second electric telescopic ram 60 is in the maximum extension state, the position of the backrest support 40 is set as the initial position.

Finally, it should be noted that: the above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention; thus, although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted; all such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and protected by the following claims.

Claims (11)

1. An intelligent electric folding wheelchair is characterized by comprising two front wheel fixing rods respectively connected with front wheels, two rear wheel fixing rods respectively connected with rear wheels, a seat support, a backrest support, a first electric telescopic push rod, a second electric telescopic push rod and a connecting piece, wherein a first underframe and a second underframe are arranged below the seat support, one end of the second underframe is respectively hinged with the two front wheel fixing rods, the other end of the second underframe is hinged with the first underframe, the lower part of the first underframe is respectively hinged with the two rear wheel fixing rods, the upper part of the first underframe is hinged with the lower part of the connecting piece, the rear part of the seat support and the lower part of the backrest support are both hinged with the upper part of the connecting piece, one end of the first electric telescopic push rod is hinged with the front part of the seat support, the other end of the first electric telescopic push rod is hinged with the upper part of the first underframe, one end of the second electric telescopic push rod is hinged with the upper part of the backrest support, the other end of the second electric telescopic push rod is hinged with the connecting piece.

2. The intelligent electric folding wheelchair as claimed in claim 1, wherein the joint of the second chassis and the first chassis is a two-chassis joint, the joint of the lower part of the first chassis and the two rear wheel fixing rods is a first-chassis lowest joint, the joint of the upper part of the first chassis and the lower part of the connecting piece is a second-chassis joint, and the two-chassis joint is located between the second-chassis joint and the first-chassis lowest joint in height.

3. The intelligent electric folding wheelchair as claimed in claim 1, wherein the rear wheel fixing rod is provided at a rear portion thereof with an anti-roll wheel and a support for mounting the anti-roll wheel, the anti-roll wheel being rotatably connected to the support and being capable of being turned and positioned up and down around the support.

4. The intelligent electric folding wheelchair as claimed in claim 1, wherein a headrest is arranged on the upper part of the backrest support, and the headrest is provided with a height adjusting mechanism and an angle adjusting mechanism.

5. The intelligent electric folding wheelchair as claimed in claim 1, wherein the seat support comprises a first connecting section and a second connecting section connected with the first connecting section, the plane of the second connecting section extends along the upper rear part of the backrest support, and the second connecting section is hinged with the connecting piece.

6. The intelligent electric folding wheelchair as claimed in claim 5, which comprises armrests in a shape of "T", wherein the shape of "T" has a third connecting section and a fourth connecting section, one end of the third connecting section is hinged to the middle of the third connecting section, the third connecting section is horizontally arranged, one end of the third connecting section is hinged to the backrest support, and the other end of the fourth connecting section is hinged to the seat support.

7. The intelligent electric folding wheelchair as claimed in claim 1, wherein the connecting member comprises an upper cross bar protruding towards the rear of the electric folding wheelchair, and the end of the second electric telescopic push rod is hinged with the upper cross bar.

8. The intelligent electric folding wheelchair as claimed in claim 1, wherein an extension part is provided at the front end side of the seat support, and the extension part and the upper end of the front wheel fixing rod are hinged with the front end of the rear wheel fixing rod.

9. The intelligent electric folding wheelchair as claimed in claim 1, comprising a controller and an electrical box, wherein the controller and the electrical box are both mounted on a second chassis, the electrical box is connected with the controller, and the first electric telescopic push rod and the second electric telescopic push rod are both connected with the controller.

10. The intelligent electric folding wheelchair as claimed in claim 1, wherein the front wheel fixing rod comprises a fifth connecting section and a sixth connecting section connected with the fifth connecting section, the fifth connecting section is in the shape of a circular arc, the concave surface of the circular arc faces the rear of the electric folding wheelchair, and the sixth connecting section is a wheel frame for connecting a wheel.

11. The intelligent electric folding wheelchair as claimed in claim 1, wherein a pedal part is provided at the front end of the second chassis.

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