CN221998225U - Foldable electric wheelchair - Google Patents

Abstract

The utility model discloses a foldable electric wheelchair, which belongs to the field of electric wheelchairs. The foldable electric wheelchair of the utility model includes a running chassis assembly, a lifting and folding mechanism and a seat assembly. The seat plate assembly is installed on the running chassis assembly through the lifting and folding mechanism. The lifting and folding mechanism adopts a four-bar linkage controlled by a controllable support rod, and one of the hinge points of the four-bar linkage passes through the telescopic axis L1 of the controllable support rod or is located near the telescopic axis L1 of the controllable support rod. The controllable support rod has a strong supporting bearing capacity for the seat plate assembly, and there is no need to set up an additional locking mechanism, so that the overall structure of the electric wheelchair is compact, the bearing stability is good, and it has the advantages of flexible and convenient use, light weight and portability. The utility model also has many advantages such as good shock absorption effect, telescopic and adjustable foot pedals, and the ability to be stored vertically.

Description

Foldable electric wheelchair

Technical Field

The present utility model relates to a wheelchair, and more particularly, to a foldable electric wheelchair.

Background

With the continuous improvement of the aging degree of society and the increase of paralyzed patients caused by various traffic accidents and various diseases, the demand for electric wheelchairs is increasing. Practical researches show that the main factors restricting the rapid popularization and application of the electric wheelchair are that the existing electric wheelchair is too heavy and not easy to carry, and the acquisition cost is high, so that the willingness of the mobility inconvenient group to use the electric wheelchair for traveling is seriously affected.

At present, the electric wheelchair is also developed in the direction of miniaturization and light weight, and has the common characteristic of being foldable so as to be convenient to carry or store. Common folding structures are multi-link structures, such as a scissor fork type lifting structure, a four-link folding structure and the like, and the scissor fork type lifting structure has strong structural stability, but relatively complex structure and larger occupied space; the four-bar folding structure has good structural compactness, but relatively poor stability, and a locking mechanism is generally required to be arranged, so that the complexity of folding or unfolding operation is increased.

In addition, the existing electric wheelchair has the following defects:

① The folding structure of the handrail is complex in design, and the manufacturing cost is increased;

② The foot pedal is of a fixed structure, cannot be adjusted according to different seat heights, and cannot be folded and stored;

③ The electric wheelchair can only be horizontally placed after being folded, and is difficult to vertically support and place, so that the occupied area of the electric wheelchair in a folded state is still larger;

④ The electric wheelchair has poor damping effect and strong walking bumpy feeling.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model aims to overcome the defects of the existing electric wheelchair, and provides a foldable electric wheelchair, by adopting the technical scheme of the utility model, the seat board assembly is arranged on the traveling chassis assembly through the lifting folding mechanism, the lifting folding mechanism adopts a four-bar mechanism controlled by the controllable support rod, one hinge point of the four-bar mechanism passes through the telescopic axis L1 of the controllable support rod or is positioned near the telescopic axis L1 of the controllable support rod, the supporting bearing capacity of the controllable support rod on the seat board assembly is strong, and a locking mechanism is not required to be additionally arranged, so that the electric wheelchair has the advantages of compact integral structure, good bearing stability, flexible and convenient use, light weight, portability and the like.

2. Technical proposal

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

The utility model relates to a foldable electric wheelchair, which comprises a running chassis assembly, a lifting folding mechanism and a seat assembly, wherein the seat assembly comprises a seat plate assembly and a backrest assembly, the backrest assembly is hinged to the rear side of the seat plate assembly, so that the backrest assembly has a backrest folding state and a backrest unfolding state relative to the seat plate assembly, the seat plate assembly is arranged on the running chassis assembly through the lifting folding mechanism, and the seat plate assembly has a seat folding state stored on the running chassis assembly and a seat unfolding state upwards far away from the running chassis assembly; wherein:

The lifting folding mechanism comprises a first supporting arm, a second supporting arm and a controllable supporting rod, wherein the lower ends of the first supporting arm and the second supporting arm are respectively hinged with the running chassis assembly, the upper ends of the first supporting arm and the second supporting arm are respectively hinged with the bottom of the seat board assembly, the first supporting arm, the running chassis assembly, the second supporting arm and the seat board assembly are sequentially connected into a four-bar mechanism, the lower end of the controllable supporting rod is hinged on the running chassis assembly, and the upper end of the controllable supporting rod is hinged at the bottom of the seat board assembly; under the state that the seat is unfolded, the controllable supporting rod is in a pressed state, one hinge point of the four-bar mechanism passes through the telescopic axis L1 of the controllable supporting rod or is positioned near the telescopic axis L1 of the controllable supporting rod, and an unlocking switch of the controllable supporting rod is arranged on the seat assembly.

Still further, the lifting folding mechanism further comprises a lower supporting seat and an upper connecting seat, wherein the lower supporting seat is fixed on the travelling chassis assembly, the upper connecting seat is fixed at the bottom of the seat plate assembly, the upper end of the first supporting arm is hinged with the upper connecting seat at a hinge point A, the lower end of the first supporting arm is hinged with the lower supporting seat at a hinge point B, the upper end of the second supporting arm is hinged with the upper connecting seat at a hinge point D, the lower end of the second supporting arm is hinged with the lower supporting seat at a hinge point C, the hinge point A is higher than the hinge point D, the hinge point B is higher than the hinge point C, and the first supporting arm, the lower supporting seat, the second supporting arm and the upper connecting seat form a parallel four-bar mechanism ABCD; the lower end of the controllable support rod is hinged with the lower support seat at a hinge point E, the upper end of the controllable support rod is hinged with the upper connection seat at a hinge point F, and the hinge point D passes through a telescopic axis L1 of the controllable support rod or is positioned near the telescopic axis L1 of the controllable support rod in a seat unfolding state.

Further, the cross-sectional shape of the first support arm is U-shaped, the second support arm is located inside the first support arm, and the controllable support rod is located inside the first support arm in the seat folded state.

Further, the lifting folding mechanism is folded towards the front side or the rear side of the foldable electric wheelchair; the controllable support rods are single support rods or double support rods controlled by the unlocking switch at the same time; the unlocking switch is a button switch or a spanner switch.

Still further, chassis assembly traveles includes chassis frame, front wheel shock attenuation arm, rear wheel, front wheel, battery package and driving motor, front wheel shock attenuation arm is platelike structure, front wheel shock attenuation arm transversely fixes the front end at the chassis frame, a front wheel is respectively installed at the both ends of front wheel shock attenuation arm, the rear end both sides of chassis frame respectively are equipped with a driving motor, driving motor is connected with the rear wheel of corresponding side, battery package detachably installs on the chassis frame.

Furthermore, the front wheels are omni-directional wheels, the driving motors of the two rear wheels are independently controlled, the chassis frame is also provided with a cover shell, the cover shell is provided with a groove for accommodating the lifting folding mechanism in a folded state, and the groove is used as a storage groove when the lifting folding mechanism is in an unfolded state.

Further, the battery packs are respectively provided with a group on the left side and the right side of the chassis frame; or the battery pack is arranged on the left side or the right side of the chassis frame, and the storage box is arranged on the other side of the chassis frame opposite to the battery pack.

Still further, the chassis frame of chassis assembly is gone has a square tubular beam of arranging from beginning to end in the middle of, the front end of square tubular beam is equipped with telescopic running-board, the rear end of running-board is equipped with the grafting portion that can slide in square tubular beam, makes the running-board have shrinkage state and the state of stretching out on going the chassis assembly, still be equipped with on the running-board and be used for dodging square tube Liang Guanbi's dodging the groove under the shrinkage state, the front portion of running-board still is equipped with the handle hole.

Still further, be equipped with the spacing groove on the grafting portion, the grafting portion is spacing through the bolt and the spacing groove cooperation of locating on the square tubular beam.

Still further, the rear portion of chassis assembly that traveles still is equipped with anti-roll wheel and rear bracket, the rear bracket is located the top of anti-roll wheel, rear bracket and anti-roll wheel can be with the electronic wheelchair vertical support that is in the folded condition on ground.

Further, a tail lamp is arranged at the rear part of the running chassis assembly, and the tail lamp is positioned below the rear bracket.

Further, a group of foldable armrests are respectively arranged on the left side and the right side of the seat board assembly, and an operation controller is arranged on one of the armrests on the two sides; the connecting end face of the handrail is provided with a first limit step and a second limit step with different angles, the connecting end of the handrail is also provided with a rotating shaft which is in rotating fit with the shaft hole on the corresponding side of the seat board assembly, the free end of the rotating shaft penetrates through the shaft hole and is tensioned through a spring, the connecting end face of the handrail and the side wall of the seat board assembly are in a tight abutting state, and when the first limit step is abutted against the side wall of the seat board assembly, the handrail is in an unfolding state; when the second limiting step is abutted against the side wall of the seat plate assembly, the handrail is in a folded state.

Still further, the seat board subassembly includes the bedplate and sets up the cushion on the bedplate, the back subassembly includes back board and the back pad of setting on the back board, at least two of cushion and back pad adopt detachable structure.

Still further, the back of back board is equipped with couple or function backplate, have the space between function backplate and the back board, the upper portion of function backplate has the hangers, still be equipped with the bandage hole on the function backplate, the rear portion of traveling chassis assembly still is equipped with the collet piece that is located bandage hole below.

Further, the seat board is a metal sheet metal part or a plastic injection molding part; when the seat plate is a metal sheet metal part, the seat plate is welded and fixed with an upper connecting seat of the lifting folding mechanism; when the seat board is a plastic injection molding piece, the upper connecting seat of the lifting folding mechanism is integrally injection molded at the bottom of the seat board.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

(1) The utility model relates to a foldable electric wheelchair, which comprises a running chassis assembly, a lifting folding mechanism and a seat assembly, wherein the seat plate assembly is arranged on the running chassis assembly through the lifting folding mechanism, the lifting folding mechanism adopts a four-bar mechanism controlled by a controllable supporting rod, one hinge point of the four-bar mechanism passes through a telescopic axis L1 of the controllable supporting rod or is positioned near the telescopic axis L1 of the controllable supporting rod, and the controllable supporting rod has strong supporting and bearing capacity on the seat plate assembly, so that a locking mechanism is not required to be additionally arranged, the whole structure of the electric wheelchair is compact, the bearing stability is good, and the electric wheelchair has the advantages of flexible and convenient use, light weight and portability and the like;

(2) The lifting folding mechanism of the foldable electric wheelchair further comprises the lower supporting seat and the upper connecting seat, the first supporting arm, the lower supporting seat, the second supporting arm and the upper connecting seat form a parallel four-bar mechanism, the lifting folding mechanism is simple in structure and convenient to install, the seat assembly is enabled to be always lifted horizontally, flexible adjustment of the height can be achieved, and the use requirements of people with different heights are met;

(3) According to the foldable electric wheelchair, the cross section of the first supporting arm is U-shaped, the second supporting arm is positioned on the inner side of the first supporting arm, the controllable supporting rod is positioned on the inner side of the first supporting arm in a seat folding state, the supporting arm is high in structural strength and bearing capacity, and small in occupied space after folding, so that the electric wheelchair is more compact after folding and can be placed in a vehicle trunk for carrying;

(4) According to the foldable electric wheelchair, the lifting folding mechanism is folded towards the front side or the rear side of the foldable electric wheelchair, so that the electric wheelchairs in different folding directions can be designed according to use requirements, and the use requirements of different users are met; the controllable support rods are single support rods or double support rods controlled by the unlocking switch at the same time, different support rod numbers can be selected according to bearing requirements, and higher bearing capacity can be obtained; the unlocking switch is a button switch or a spanner switch, and the unlocking operation is simple and convenient;

(5) The foldable electric wheelchair disclosed by the utility model has the advantages that the running chassis assembly comprises the chassis frame, the front wheel damping arm, the rear wheels, the front wheels, the battery pack and the driving motor, the front wheel damping arm is of a plate-shaped structure, and the front wheels are arranged on the front wheel damping arm, so that the damping effect of the electric wheelchair can be improved, the bumpy feeling in the running process is reduced, and the driving comfort is improved; the battery pack is detachably arranged on the chassis frame, so that the battery pack is convenient to replace and charge;

(6) The front wheels of the foldable electric wheelchair are omni-directional wheels, the driving motors of the two rear wheels are independently controlled, and the turning radius is small; the chassis frame is also provided with a cover shell, the cover shell is provided with a groove for accommodating the lifting folding mechanism in a folded state, and the groove is used as a storage groove when the lifting folding mechanism is in an unfolded state, so that the storage space of the electric wheelchair can be increased;

(7) According to the foldable electric wheelchair, the battery packs are respectively arranged on the left side and the right side of the chassis frame, so that the battery capacity can be improved, and the charging duration of the electric wheelchair can be increased; or the battery pack is arranged on the left side or the right side of the chassis frame, the design of the single battery pack can reduce the cost, different requirements of users on high-low configuration are met, and meanwhile, the storage box is arranged on the other side of the chassis frame opposite to the battery pack, so that the storage space of the electric wheelchair can be increased, and the overall coordination of the electric wheelchair can be improved;

(8) According to the foldable electric wheelchair, the square tube beam which is arranged front and back is arranged in the middle of the chassis frame of the running chassis assembly, the front end of Fang Guanliang is provided with the telescopic foot pedal, the foot pedal can be adjusted in a telescopic manner according to the height of the seat plate, so that the placement of the two legs is more comfortable and natural, and the foldable electric wheelchair can be folded to a contracted state, so that the foldable electric wheelchair is more compact; the plug-in part of the pedal is provided with a limit groove, and the plug-in part is matched with the limit groove for limit through a bolt arranged on the square pipe beam, so that the structure is simple, and the installation is convenient;

(9) According to the foldable electric wheelchair, the rear part of the running chassis assembly is further provided with the anti-tilting wheel and the rear support, the rear support is positioned above the anti-tilting wheel, and the rear support and the anti-tilting wheel can vertically support the electric wheelchair in a folded state on the ground, so that the occupied area of the electric wheelchair after being folded and stored is reduced, and the electric wheelchair is more convenient to store;

(10) According to the foldable electric wheelchair, the tail lamp is arranged at the rear part of the running chassis assembly, so that a warning effect can be achieved, and the night use safety of the electric wheelchair is improved; the tail lamp is positioned below the rear bracket, and the rear bracket can shield upward light of the tail lamp, so that the tail lamp is prevented from being dazzled;

(11) The foldable electric wheelchair is characterized in that the left side and the right side of the seat plate assembly are respectively provided with a group of foldable armrests, the armrests are limited in an unfolding state or a folding state through the two limiting steps, and the foldable electric wheelchair is simple in structure and simple and convenient to fold and unfold;

(12) The seat board assembly comprises a seat board and a seat cushion arranged on the seat board, the backrest assembly comprises a backrest board and a backrest cushion arranged on the backrest board, at least one of the seat cushion and the backrest cushion adopts a detachable structure, and the electric wheelchair is folded after the seat cushion or the backrest cushion is detached, so that the folding angle of the backrest is larger and the folding is more compact;

(13) According to the foldable electric wheelchair, the back of the backboard is provided with the hooks or the functional backboard, so that articles can be conveniently hung and placed, and the functionality and the practicability of the electric wheelchair are improved; a gap is formed between the functional backboard and the backrest backboard, and a hanging lug is arranged at the upper part of the functional backboard, so that the backpack and the like can be hung by using the hanging lug; the functional backboard is also provided with a binding band hole, the rear part of the running chassis assembly is also provided with a bottom support piece positioned below the binding band hole, and the binding band hole is matched with the bottom support piece, so that an umbrella, a crutch and the like can be conveniently placed;

(14) According to the foldable electric wheelchair, the seat plate is a metal sheet metal part or a plastic injection molding part, when the seat plate is a metal sheet metal part, the seat plate is welded and fixed with the upper connecting seat of the lifting folding mechanism, and the manufactured bottom plate has high overall structural strength; when the seat board is a plastic injection molding piece, the upper connecting seat of the lifting folding mechanism is integrally injection molded at the bottom of the seat board, so that the seat board is more convenient to manufacture, and the manufacturing cost is reduced.

Drawings

FIG. 1 is a schematic perspective view of a foldable electric wheelchair according to embodiment 1 of the present utility model;

FIG. 2 is a schematic view showing another perspective view of a foldable electric wheelchair according to embodiment 1 of the present utility model;

Fig. 3 is a schematic view of the arrangement structure of the lifting and folding mechanism in the electric wheelchair according to embodiment 1 of the present utility model;

Fig. 4 is a schematic perspective view of a lifting and folding mechanism according to embodiment 1 of the present utility model;

FIG. 5 is a schematic side view of the lifting/folding mechanism according to embodiment 1 of the present utility model;

FIG. 6 is a schematic view of the chassis assembly of embodiment 1;

FIG. 7 is a schematic view of the chassis assembly of FIG. 6 with the cover hidden;

FIG. 8 is a schematic view of a seat assembly according to embodiment 1 of the present utility model;

fig. 9 is a schematic diagram showing a disassembled structure of the handrail in embodiment 1 of the present utility model;

Fig. 10 is a schematic structural view of a foldable electric wheelchair according to embodiment 1 of the present utility model;

FIG. 11 is a schematic view showing a foldable electric wheelchair according to embodiment 1 of the present utility model in a folded state on the ground;

FIG. 12 is a schematic view showing a foldable electric wheelchair according to embodiment 1 of the present utility model in a towed state by anti-roll wheels;

FIG. 13 is a schematic view showing the vertical storage of a foldable electric wheelchair according to embodiment 1 of the present utility model using anti-roll wheels and a rear frame;

FIG. 14 is a schematic view showing an angle perspective structure of a foldable electric wheelchair according to embodiment 2 of the present utility model;

FIG. 15 is a schematic view showing another perspective view of a foldable electric wheelchair according to embodiment 2 of the present utility model;

Fig. 16 is a schematic perspective view of a lifting/folding mechanism according to embodiment 2 of the present utility model;

FIG. 17 is a schematic perspective view showing an angle of a foldable electric wheelchair according to embodiment 3 of the present utility model;

FIG. 18 is a schematic view showing another perspective view of a foldable electric wheelchair according to embodiment 3 of the present utility model;

Fig. 19 is a schematic perspective view of a foldable electric wheelchair according to embodiment 4 of the present utility model.

Reference numerals in the schematic drawings illustrate:

1. A chassis assembly for traveling; 1-1, a chassis frame; 1-2, a front wheel damping arm; 1-2-1, fixing bolts; 1-3, rear wheels; 1-4, front wheels; 1-5, a housing; 1-5-1, grooves; 1-6, a battery pack; 1-6A, a storage box; 1-7, a mud guard; 1-8, a rear bracket; 1-8-1, a base; 1-9, an anti-tilting wheel; 1-10, tail lamp; 1-11, driving a motor;

2. A lifting folding mechanism; 2-1, a first support arm; 2-2, a second supporting arm; 2-3, controllable support rods; 2-3-1, unlocking the switch; 2-4, a lower supporting seat; 2-5, an upper connecting seat;

3. A seat assembly; 3-1, a seat board; 3-1-1, a shaft hole; 3-2, a cushion; 3-3, a backboard; 3-3-1, a hook; 3-4, a backrest cushion; 3-5, a functional backboard; 3-5-1, hangers; 3-5-2, strap holes; 3-6, armrests; 3-6-1, a first limiting step; 3-6-2, a second limiting step; 3-7, operating a controller; 3-8, springs; 3-9, rotating shaft; 3-10, limiting rings; 3-11, check ring;

4. A foot pedal; 4-1, a plug-in part; 4-2, a handle hole; 4-3, avoiding the groove.

Detailed Description

For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings and examples.

Example 1

Referring to fig. 1 to 5, a foldable electric wheelchair of the present embodiment includes a traveling chassis assembly 1, a lifting and folding mechanism 2, and a seat assembly 3, wherein the traveling chassis assembly 1 is used for traveling driving of the electric wheelchair, the lifting and folding mechanism 2 is used for lifting and folding the seat assembly 3, and the seat assembly 3 is used for riding; the seat assembly 3 comprises a seat board assembly and a backrest assembly, wherein the backrest assembly is hinged to the rear side of the seat board assembly, so that the backrest assembly has a backrest folding state and a backrest unfolding state relative to the seat board assembly, the seat board assembly is arranged on the running chassis assembly 1 through the lifting folding mechanism 2, and the seat board assembly has a seat folding state stored on the running chassis assembly 1 and a seat unfolding state upwards far away from the running chassis assembly 1. When the wheelchair is used, the seat plate component is upwards far away from the running chassis assembly 1 and is in a seat unfolding state, and the backrest component is also in a backrest unfolding state, so that the wheelchair can be sitting on the seat assembly 3 in a normal sitting posture to operate the electric wheelchair; when folding to accomodate or carry, the bedplate subassembly is accomodate and is in the seat folding state on traveling chassis assembly 1, and is manual with back subassembly folding the laying, electronic wheelchair compact structure conveniently carries or accomodates this moment. Unlike the existing electric wheelchair, the lifting and folding mechanism 2 in this embodiment includes a first support arm 2-1, a second support arm 2-2 and a controllable support rod 2-3, the lower ends of the first support arm 2-1 and the second support arm 2-2 are respectively hinged with the chassis assembly 1, the upper ends of the first support arm 2-1 and the second support arm 2-2 are respectively hinged with the bottom of the seat board assembly, so that the first support arm 2-1, the chassis assembly 1, the second support arm 2-2 and the seat board assembly are sequentially connected into a four-bar mechanism, the lower end of the controllable support rod 2-3 is hinged on the chassis assembly 1, the upper end is hinged on the bottom of the seat board assembly, and the state of the lifting and folding mechanism 2 is controlled by using the controllable support rod 2-3. Under the state of unfolding the seat, the controllable support rod 2-3 is in a pressed state, one hinge point of the four-bar mechanism passes through the telescopic axis L1 of the controllable support rod 2-3 or is positioned near the telescopic axis L1 of the controllable support rod 2-3, the controllable support rod 2-3 is stressed more stably, the supporting bearing capacity to the seat plate assembly is strong, a locking mechanism is not required to be additionally arranged, the whole structure of the electric wheelchair is compact, the bearing stability is good, and the electric wheelchair has the advantages of flexible and convenient use, light weight, portability and the like. The unlocking switch 2-3-1 of the controllable support rod 2-3 is arranged on the seat assembly 3, the unlocking switch 2-3-1 is preferably a button switch, the controllable support rod 2-3 can be controlled to unlock and stretch by pressing the unlocking switch 2-3-1, so that the electric wheelchair is folded or unfolded and the seat plate height is adjusted, and the current position can be maintained by loosening the unlocking switch 2-3-1.

Referring to fig. 4 and 5, in the present embodiment, the lifting and folding mechanism 2 further includes a lower support base 2-4 and an upper connection base 2-5, the lower support base 2-4 is fixed on the traveling chassis assembly 1, the upper connection base 2-5 is fixed at the bottom of the seat plate assembly, the upper end of the first support arm 2-1 is hinged to the upper connection base 2-5 at a hinge point a, the lower end of the first support arm 2-1 is hinged to the lower support base 2-4 at a hinge point B, the upper end of the second support arm 2-2 is hinged to the upper connection base 2-5 at a hinge point D, the lower end of the second support arm 2-4 is hinged to the lower support base 2-4 at a hinge point C, the hinge point a is higher than the hinge point D, and the hinge point B is higher than the hinge point C, so that after the lifting and folding mechanism 2 is folded, the first support arm 2-1 and the second support arm 2-2 can be kept substantially horizontal and compact after folding. The first support arm 2-1, the lower support seat 2-4, the second support arm 2-2 and the upper connecting seat 2-5 form a parallel four-bar mechanism ABCD, so that the seat assembly 3 always keeps horizontal lifting, the flexible adjustment of the height can be realized, and the use requirements of people with different heights are met. The lower end of the controllable support rod 2-3 is hinged with the lower support seat 2-4 at a hinge point E, the upper end of the controllable support rod 2-3 is hinged with the upper connection seat 2-5 at a hinge point F, the hinge point F is higher than the hinge point D, and the hinge point D passes through the telescopic axis L1 of the controllable support rod 2-3 or is positioned near the telescopic axis L1 of the controllable support rod 2-3 in the unfolded state of the seat. When the controllable support rod 2-3 is pressed, the pressure direction passes through or approximately passes through the hinge point D, so that the bearing capacity of the controllable support rod 2-3 can be fully exerted, and the bearing stability and reliability of the electric wheelchair are improved. In the present embodiment, the seat assembly 3 takes the form of a forward fold, that is, the lift folding mechanism 2 is folded toward the front side of the foldable electric wheelchair, and when the lift folding mechanism 2 is unfolded, the first support arm 2-1 and the second support arm 2-2 are in a forward tilted state, and the controllable support bar 2-3 is also in a forward tilted state. In this embodiment, the controllable support rod 2-3 is a single support rod, preferably a controllable hydraulic rod or a controllable pneumatic rod, and the unlocking switch 2-3-1 is preferably disposed at the front side of the seat board assembly, so as to facilitate operation. Further, the cross-sectional shape of the first support arm 2-1 is preferably a U shape, the second support arm 2-2 is located inside the first support arm 2-1, and the controllable support rod 2-3 is located inside the first support arm 2-1 in the folded state of the seat. By adopting the structure, the supporting arm is high in structural strength, strong in bearing capacity and small in occupied space after being folded, so that the electric wheelchair is more compact after being folded, and can be placed in a car trunk for carrying. The unfolded use state of the electric wheelchair is shown in fig. 1 and 2, and the folded storage state is shown in fig. 10 and 11.

Referring to fig. 1 to 3, and referring to fig. 6 and 7, the traveling chassis assembly 1 of the present embodiment includes a chassis frame 1-1, front wheel shock absorbing arms 1-2, rear wheels 1-3, front wheels 1-4, a battery pack 1-6 and a driving motor 1-11, the front wheel shock absorbing arms 1-2 are plate-shaped structures, preferably made of spring steel, the front wheel shock absorbing arms 1-2 are transversely fixed at the front end of the chassis frame 1-1, two ends of the front wheel shock absorbing arms 1-2 are respectively provided with a front wheel 1-4, two sides of the rear end of the chassis frame 1-1 are respectively provided with a driving motor 1-11, the driving motor 1-11 is connected with the rear wheels 1-3 on the corresponding sides, and the battery pack 1-6 is detachably mounted on the chassis frame 1-1. The rear wheels 1-3 are used as driving wheels, the front wheels are used as driven wheels, the running is stable, and the steering is stable. The front wheels 1-4 are mounted through the front wheel damping arms 1-2 in a cantilever manner, the elasticity of the front wheel damping arms 1-2 is utilized to play a damping role, the damping effect of the electric wheelchair is improved, the bumpy feeling in the running process is reduced, and the driving comfort is improved. The battery packs 1-6 are designed in a detachable way, so that the battery packs are convenient to replace and charge. The battery packs 1-6 can be arranged at the middle position of the side edge of the running chassis assembly 1, a group of battery packs can be arranged on the left side and the right side of the running chassis assembly 1 respectively, a group of battery packs can be arranged on one side, and decoration pieces can be arranged on the other side. In the embodiment, the battery packs 1-6 are respectively arranged on the left side and the right side of the chassis frame 1-1, so that the battery capacity can be improved, the charging duration of the electric wheelchair can be increased, the center of gravity of the running chassis assembly 1 is closer to the middle, and the running stability of the electric wheelchair can be improved. In addition, in the embodiment, the front wheels 1-4 are omni-wheels, the driving motors 1-11 of the two rear wheels 1-3 are independently controlled, and the straight running or steering of the electric wheelchair can be flexibly controlled by respectively controlling the rotating speeds of the driving motors 1-11, so that the turning radius of the omni-wheels is small. The chassis assembly 1 is also provided with a mud guard 1-7 positioned above the front wheel 1-4 and the rear wheel 1-3. The chassis frame 1-1 is also provided with the housing 1-5, the housing 1-5 is used as a decoration piece and also used as a protection piece, the housing 1-5 is provided with the groove 1-5-1 for accommodating the lifting folding mechanism 2 in a folding state, and the groove 1-5-1 is used as a storage groove when the lifting folding mechanism 2 is in an unfolding state, so that the storage space of the electric wheelchair can be increased. The recess 1-5-1 is located before the lift and fold mechanism 2 to facilitate placement of items when the seat assembly 3 is in the forwardly folded configuration.

As shown in fig. 6 and 7, in the present embodiment, a square tubular beam is provided in the middle of the chassis frame 1-1 of the chassis assembly 1, and a retractable foot rest 4 is provided at the front end of Fang Guanliang, and the foot rest 4 can be adjusted in a retractable manner according to the height of the seat plate, so that the legs can be placed more comfortably and naturally, and can be folded into a retracted state, so that the electric wheelchair can be folded more compactly. Specifically, the rear end of the pedal plate 4 is provided with a plug-in part 4-1 capable of sliding in the square tube beam, so that the pedal plate 4 has a contracted state and an extended state on the traveling chassis assembly 1, and the pedal plate 4 is also provided with an avoiding groove 4-3 for avoiding the square tube Liang Guanbi in the contracted state, thereby ensuring the telescopic adjustment stroke of the pedal plate 4. The front part of the pedal plate 4 is also provided with a handle hole 4-2, and the electric wheelchair in the folded state can be pulled to move through the handle hole 4-2. The plug-in part 4-1 is provided with a limit groove, and the plug-in part 4-1 is matched and limited with the limit groove through a bolt arranged on the square pipe beam. Specifically, the middle part of the front wheel damping arm 1-2 is fixed on the lower side wall of the front part of the square pipe beam through the fixing bolt 1-2-1, and the part of the fixing bolt 1-2-1 positioned on the inner side of the square pipe beam is just positioned in the limit groove of the plug-in part 4-1, so that the maximum extending position of the pedal plate 4 is limited, and the structure is simple and the installation is convenient.

Referring to fig. 2 and 3, in the present embodiment, an anti-tilting wheel 1-9 and a rear bracket 1-8 are further provided at the rear of the chassis assembly 1, the rear bracket 1-8 is located above the anti-tilting wheel 1-9, and the rear bracket 1-8 and the anti-tilting wheel 1-9 can vertically support the electric wheelchair in a folded state on the ground. In the normal use process, the anti-tilting wheel 1-9 is lifted off the ground, and the anti-tilting wheel 1-9 can prevent the electric wheelchair from tilting backwards, so that the use is safer. In addition, the anti-roll wheels 1-9 may be used as auxiliary wheels for towing movements. Referring to fig. 11 to 13, by pressing the unlocking switch 2-3-1, the seat assembly 3 can be lowered by gravity or manual assistance, and folded on the traveling chassis assembly 1 to form the state shown in fig. 11, and at this time, the occupied space in the height direction of the electric wheelchair is reduced. When the wheelchair moves in the folded state, the electric wheelchair can be lifted upwards by utilizing the handle holes 4-2 on the pedal plate 4, so that the anti-tilting wheels 1-9 contact the ground, and the rear wheels 1-3 are lifted off to form the state shown in fig. 12, and the electric wheelchair can be pulled to move. When the electric wheelchair is stored, the electric wheelchair in a folded state is lifted upwards to form a vertical state, and at the moment, the anti-tilting wheels 1-9 and the rear brackets 1-8 are simultaneously contacted with the ground and supported in the vertical state (as shown in fig. 13), so that the storage space is further reduced, and the electric wheelchair is more convenient to store.

Referring to fig. 2, in this embodiment, a rear part of the chassis assembly 1 is further provided with a tail lamp 1-10, and the tail lamp 1-10 can play a role in warning, so as to improve the safety of the electric wheelchair in use at night. The tail lamp 1-10 is located below the rear support 1-8, and the rear support 1-8 can just shield upward light of the tail lamp 1-10, so that the tail lamp 1-10 is prevented from being dazzled.

As shown in fig. 8 and 9, in this embodiment, a set of foldable armrests 3-6 are respectively disposed on the left and right sides of the seat plate assembly, an operation controller 3-7 is disposed on one of the armrests 3-6 on the two sides, and a storage barrel or the like may be disposed on the other of the armrests, and articles such as a water cup or a mobile phone or the like may be placed in the storage barrel. The connecting end face of the handrail 3-6 is provided with a first limit step 3-6-1 and a second limit step 3-6-2 with different angles, the connecting end of the handrail 3-6 is also provided with a rotating shaft 3-9 which is in rotating fit with the shaft hole 3-1-1 on the corresponding side of the seat plate assembly, the free end of the rotating shaft 3-9 penetrates through the shaft hole 3-1 and is tensioned through a spring 3-8, the connecting end face of the handrail 3-6 is in a tight abutting state with the side wall of the seat plate assembly, and when the first limit step 3-6-1 abuts against the side wall of the seat plate assembly, the handrail 3-6 is in an unfolding state; when the second limiting step 3-6-2 is abutted against the side wall of the seat plate assembly, the armrest 3-6 is in a folded state. Specifically, the second limiting step 3-6-2 is higher than the first limiting step 3-6-1, the rotating shaft 3-9 penetrates through the shaft hole 3-1-1 on the corresponding side of the seat plate assembly, the spring 3-8 is sleeved at the extending end of the rotating shaft 3-9, one end of the spring 3-8 abuts against the seat plate assembly, the other end abuts against the limiting ring 3-10, and the limiting ring 3-10 is limited through the retaining ring 3-11 clamped on the rotating shaft 3-9. In the unfolding state of the armrest 3-6, the first limiting step 3-6-1 is abutted against the side wall of the seat plate assembly, when the armrest is required to be folded, the armrest 3-6 is pulled outwards to enable the first limiting step 3-6-1 to be separated from the side wall of the seat plate assembly, and then the armrest 3-6 is rotated backwards to enable the second limiting step 3-6-2 to be abutted against the side wall of the seat plate assembly, so that the armrest is kept in a folded state.

In this embodiment, the seat board assembly includes a seat board 3-1 and a seat cushion 3-2 disposed on the seat board 3-1, the backrest assembly includes a backrest board 3-3 and a backrest cushion 3-4 disposed on the backrest board 3-3, the seat board 3-1 and the backrest board 3-3 are both made of hard materials, the seat cushion 3-2 and the backrest cushion 3-4 are both made of soft materials, and at least one of the seat cushion 3-2 and the backrest cushion 3-4 adopts a detachable structure, for example, a magic tape is used for connection, so that the seat cushion 3-2 or the backrest cushion 3-4 can be flexibly detached. After the cushion 3-2 or the backrest cushion 3-4 is disassembled, the electric wheelchair is folded, so that the folding angle of the backrest is larger, and the folding is more compact. Further, the seat board 3-1 is a metal sheet metal part, the seat board 3-1 is welded and fixed with the upper connecting seat 2-5 of the lifting folding mechanism 2, and the manufactured bottom board has high overall structural strength. In addition, referring to fig. 2, a functional backboard 3-5 is provided at the back of the backboard 3-3, a gap is provided between the functional backboard 3-5 and the backboard 3-3, a hanging bracket 3-5-1 is provided at the upper part of the functional backboard 3-5, a binding band hole 3-5-2 is provided on the functional backboard 3-5, and a bottom support 1-8-1 is provided at the rear of the chassis assembly 1 below the binding band hole 3-5-2. The functional backboard 3-5 not only can play a role in decoration, but also can increase the functionality of the electric wheelchair, for example, a backpack and the like can be hung by utilizing the hanging lugs 3-5-1 on the functional backboard 3-5, and the bag strap is positioned in the gap between the functional backboard 3-5 and the backboard 3-3, so that the hanging is stable. The binding band holes 3-5-2 on the functional backboard 3-5 can be penetrated with a magic tape, the bottom support piece 1-8-1 is arranged below the magic tape, an umbrella or a crutch and the like can be placed, the lower end of the umbrella or the crutch is propped against the bottom support piece 1-8-1, and the upper end of the umbrella or the crutch is fixed through the magic tape.

Example 2

The basic structure and the working principle of the foldable electric wheelchair of the embodiment are the same as those of the embodiment 1, and the differences are that:

As shown in fig. 14 to 16, in the present embodiment, the controllable support rods 2-3 are dual support rods controlled by the unlocking switch 2-3-1 at the same time, and the dual support rods preferably adopt controllable hydraulic rods or controllable pneumatic rods, and different support rod numbers can be selected according to the bearing requirements, so that higher bearing capacity can be obtained. In addition, the unlocking switch 2-3-1 is preferably a spanner type switch, the operation stroke of the spanner type switch is long, the unlocking of the two support rods can be controlled simultaneously, and the operation is simple and convenient.

In addition, in the present embodiment, the battery pack 1-6 is provided on the left side or the right side of the chassis frame 1-1, and the storage box 1-6A is provided on the other side of the chassis frame 1-1 opposite to the battery pack 1-6. In fig. 14, a battery pack 1-6 is disposed on the left side of a chassis frame 1-1, and a storage box 1-6A is disposed on the right side of the chassis frame 1-1, so that the design of a single battery pack can reduce the cost and meet different requirements of users on height configuration, and meanwhile, the storage box 1-6A is disposed on the chassis frame 1-1, so that not only can the storage space of an electric wheelchair be increased, but also the overall coordination of the electric wheelchair can be improved.

As shown in fig. 16, in this embodiment, the seat board 3-1 is a plastic injection molding piece, the upper connecting seat 2-5 of the lifting folding mechanism 2 is integrally injection molded at the bottom of the seat board 3-1, and the upper connecting seat 2-5 and the seat board 3-1 are integrally molded, so that the manufacturing is more convenient, and the manufacturing cost is reduced. The integral seat board 3-1 can be made of engineering plastics or fiber reinforced plastics, so that the overall structural strength of the seat board 3-1 is ensured, and the weight of the electric wheelchair is reduced.

Example 3

The basic structure and the working principle of the foldable electric wheelchair of the embodiment are the same as those of the embodiment 1, and the differences are that:

As shown in fig. 17 and 18, in the present embodiment, the seat assembly 3 takes the form of a backward fold, i.e., the lift folding mechanism 2 is folded toward the rear side of the foldable electric wheelchair. At this time, when the lift folding mechanism 2 is unfolded, the first support arm 2-1 and the second support arm 2-2 are in a backward inclined state, and the controllable support rod 2-3 is also in a backward inclined state. The unlocking switch 2-3-1 of the controllable support rod 2-3 may be provided at the rear side of the seat assembly 3, and the seat assembly 3 may be folded backward or height-adjusted by controlling the unlocking switch 2-3-1. At this time, the groove 1-5-1 on the housing 1-5 is located behind the lifting folding mechanism 2, and the lifting folding mechanism 2 is folded back and accommodated in the groove 1-5-1. The unlocking switch 2-3-1 may be installed at the rear of the seat assembly 3.

The back of the backrest plate 3-3 is provided with a plurality of hooks 3-3-1, and the hooks 3-3-1 are convenient for hanging articles.

Example 4

The basic structure and the working principle of the foldable electric wheelchair of the embodiment are the same as those of the embodiment 3, and the differences are that:

Referring to fig. 19, in this embodiment, the controllable support rods 2-3 are dual support rods controlled by the unlocking switch 2-3-1 at the same time, and the dual support rods preferably adopt controllable hydraulic rods or controllable pneumatic rods, and different support rod numbers can be selected according to the bearing requirements, so that a higher bearing capacity can be obtained. In addition, the unlocking switch 2-3-1 is preferably a spanner type switch, the operation stroke of the spanner type switch is long, the unlocking of the two support rods can be controlled simultaneously, and the operation is simple and convenient.

According to the foldable electric wheelchair, the seat board assembly is arranged on the traveling chassis assembly through the lifting folding mechanism, the lifting folding mechanism adopts the four-bar mechanism controlled by the controllable support rod, one hinge point of the four-bar mechanism passes through the telescopic axis L1 of the controllable support rod or is positioned near the telescopic axis L1 of the controllable support rod, the supporting bearing capacity of the controllable support rod on the seat board assembly is strong, and a locking mechanism is not required to be additionally arranged, so that the whole structure of the electric wheelchair is compact, the bearing stability is good, and the electric wheelchair has the advantages of being flexible and convenient to use, light and portable and the like. In addition, the front wheel of the foldable electric wheelchair is arranged on the front wheel damping arm, so that the damping effect of the electric wheelchair can be improved, the bumpy feeling in the driving process is reduced, and the driving comfort is improved. The pedal can be adjusted in a telescopic mode according to the height of the seat plate, so that the placement of the two legs is more comfortable and natural, and the electric wheelchair can be folded to be in a contracted state, so that the electric wheelchair is more compact after being folded. The rear bracket and the anti-tilting wheels can vertically support the electric wheelchair in a folded state on the ground, so that the occupied area of the electric wheelchair after being folded and stored is reduced, and the electric wheelchair is more convenient to store. The handrail is limited in an unfolding state or a folding state through the two limiting steps, and the handrail is simple in structure and easy and convenient to fold and unfold. The back of the back rest board is provided with the hook or the functional back rest board, so that articles can be conveniently hung and put, and the functionality and the practicability of the electric wheelchair are improved.

The utility model and its embodiments have been described above schematically, without limitation, and the actual construction is not limited to this, as it is shown in the drawings, which are only one of the embodiments of the utility model. Therefore, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical scheme are not creatively devised without departing from the spirit of the present utility model, and all the structural manners and the embodiment are considered to be within the protection scope of the present utility model.

Claims (15)

1. The foldable electric wheelchair comprises a running chassis assembly (1), a lifting folding mechanism (2) and a seat assembly (3), wherein the seat assembly (3) comprises a seat plate assembly and a backrest assembly, the backrest assembly is hinged to the rear side of the seat plate assembly, so that the backrest assembly has a backrest folding state and a backrest unfolding state relative to the seat plate assembly, the seat plate assembly is arranged on the running chassis assembly (1) through the lifting folding mechanism (2), and the seat plate assembly has a seat folding state accommodated on the running chassis assembly (1) and a seat unfolding state upwards far away from the running chassis assembly (1); the method is characterized in that:

The lifting folding mechanism (2) comprises a first supporting arm (2-1), a second supporting arm (2-2) and a controllable supporting rod (2-3), wherein the lower ends of the first supporting arm (2-1) and the second supporting arm (2-2) are respectively hinged with the running chassis assembly (1), the upper ends of the first supporting arm (2-1) and the second supporting arm (2-2) are respectively hinged with the bottom of the seat plate assembly, so that the first supporting arm (2-1), the running chassis assembly (1), the second supporting arm (2-2) and the seat plate assembly are sequentially connected into a four-bar mechanism, the lower ends of the controllable supporting rod (2-3) are hinged on the running chassis assembly (1), and the upper ends of the controllable supporting rod are hinged with the bottom of the seat plate assembly; under the state of unfolding the seat, the controllable support rod (2-3) is in a pressed state, one hinge point of the four-bar mechanism passes through the telescopic axis L1 of the controllable support rod (2-3) or is positioned near the telescopic axis L1 of the controllable support rod (2-3), and the unlocking switch (2-3-1) of the controllable support rod (2-3) is arranged on the seat assembly (3).

2. The foldable electric wheelchair of claim 1, wherein: the lifting folding mechanism (2) further comprises a lower supporting seat (2-4) and an upper connecting seat (2-5), the lower supporting seat (2-4) is fixed on the traveling chassis assembly (1), the upper connecting seat (2-5) is fixed at the bottom of the seat plate assembly, the upper end of the first supporting arm (2-1) is hinged with the upper connecting seat (2-5) at a hinge point A, the lower end of the first supporting arm is hinged with the lower supporting seat (2-4) at a hinge point B, the upper end of the second supporting arm (2-2) is hinged with the upper connecting seat (2-5) at a hinge point D, the lower end of the second supporting arm is hinged with the lower supporting seat (2-4) at a hinge point C, the hinge point A is higher than the hinge point D, the hinge point B is higher than the hinge point C, and the first supporting arm (2-1), the lower supporting seat (2-4), the second supporting arm (2-2) and the upper connecting seat (2-5) form a parallel four-bar mechanism ABCD; the lower end of the controllable supporting rod (2-3) is hinged with the lower supporting seat (2-4) at a hinge point E, the upper end of the controllable supporting rod is hinged with the upper connecting seat (2-5) at a hinge point F, and the hinge point D passes through a telescopic axis L1 of the controllable supporting rod (2-3) or is positioned near the telescopic axis L1 of the controllable supporting rod (2-3) in a seat unfolding state.

3. The foldable electric wheelchair of claim 2, wherein: the cross section of the first supporting arm (2-1) is U-shaped, the second supporting arm (2-2) is positioned on the inner side of the first supporting arm (2-1), and the controllable supporting rod (2-3) is positioned on the inner side of the first supporting arm (2-1) in the seat folding state.

4. A collapsible electric wheelchair according to claim 1 or 2 or 3, wherein: the lifting folding mechanism (2) is folded towards the front side or the rear side of the foldable electric wheelchair; the controllable support rods (2-3) are single support rods or double support rods controlled by the unlocking switch (2-3-1) at the same time; the unlocking switch (2-3-1) is a button switch or a spanner switch.

5. The foldable electric wheelchair of claim 1, wherein: the chassis assembly (1) that traveles includes chassis frame (1-1), front wheel shock attenuation arm (1-2), rear wheel (1-3), front wheel (1-4), battery package (1-6) and driving motor (1-11), front wheel shock attenuation arm (1-2) are platelike structure, front wheel shock attenuation arm (1-2) transversely fixes the front end at chassis frame (1-1), front wheel (1-4) are respectively installed at the both ends of front wheel shock attenuation arm (1-2), the rear end both sides of chassis frame (1-1) respectively are equipped with driving motor (1-11), driving motor (1-11) are connected with rear wheel (1-3) of corresponding side, battery package (1-6) detachably installs on chassis frame (1-1).

6. The foldable electric wheelchair of claim 5, wherein: the front wheels (1-4) are omni-directional wheels, driving motors (1-11) of the two rear wheels (1-3) are independently controlled, a housing (1-5) is further arranged on the chassis frame (1-1), a groove (1-5-1) for accommodating the lifting folding mechanism (2) in a folded state is formed in the housing (1-5), and the groove (1-5-1) serves as a storage groove when the lifting folding mechanism (2) is in an unfolded state.

7. The foldable electric wheelchair of claim 5, wherein: the battery packs (1-6) are respectively provided with a group on the left side and the right side of the chassis frame (1-1); or the battery pack (1-6) is arranged on the left side or the right side of the chassis frame (1-1), and the storage box (1-6A) is arranged on the other side of the chassis frame (1-1) opposite to the battery pack (1-6).

8. The foldable electric wheelchair of claim 1, wherein: the novel bicycle chassis is characterized in that a square tube beam which is arranged front and back is arranged in the middle of a chassis frame (1-1) of the bicycle chassis assembly (1), a telescopic pedal plate (4) is arranged at the front end of the square tube beam, a plug-in portion (4-1) capable of sliding in the square tube beam is arranged at the rear end of the pedal plate (4), the pedal plate (4) is in a contracted state and an extended state on the bicycle chassis assembly (1), an avoidance groove (4-3) for avoiding square tubes Liang Guanbi in the contracted state is further formed in the pedal plate (4), and a hand pulling hole (4-2) is formed in the front portion of the pedal plate (4).

9. The foldable electric wheelchair of claim 8, wherein: the plug-in part (4-1) is provided with a limit groove, and the plug-in part (4-1) is limited by being matched with the limit groove through a bolt arranged on the square pipe beam.

10. The foldable electric wheelchair of claim 1, wherein: the rear part of the running chassis assembly (1) is further provided with an anti-tilting wheel (1-9) and a rear support (1-8), the rear support (1-8) is located above the anti-tilting wheel (1-9), and the rear support (1-8) and the anti-tilting wheel (1-9) can vertically support the electric wheelchair in a folded state on the ground.

11. The foldable electric wheelchair of claim 10, wherein: the rear part of the running chassis assembly (1) is also provided with a tail lamp (1-10), and the tail lamp (1-10) is positioned below the rear bracket (1-8).

12. The foldable electric wheelchair of claim 1, wherein: the left side and the right side of the seat board assembly are respectively provided with a group of foldable armrests (3-6), and one of the armrests (3-6) at the two sides is provided with an operation controller (3-7); the connecting end face of the handrail (3-6) is provided with a first limit step (3-6-1) and a second limit step (3-6-2) with different angles, the connecting end of the handrail (3-6) is also provided with a rotating shaft (3-9) which is in rotating fit with the shaft hole (3-1-1) on the corresponding side of the seat plate assembly, the free end of the rotating shaft (3-9) penetrates through the shaft hole (3-1) and is tensioned through a spring (3-8), the connecting end face of the handrail (3-6) is in a tight abutting state with the side wall of the seat plate assembly, and when the first limit step (3-6-1) is abutted against the side wall of the seat plate assembly, the handrail (3-6) is in an unfolding state; when the second limiting step (3-6-2) is abutted against the side wall of the seat plate assembly, the handrail (3-6) is in a folded state.

13. The foldable electric wheelchair of claim 1, wherein: the seat board assembly comprises a seat board (3-1) and a cushion (3-2) arranged on the seat board (3-1), the backrest assembly comprises a backrest board (3-3) and a backrest cushion (3-4) arranged on the backrest board (3-3), and at least one of the cushion (3-2) and the backrest cushion (3-4) adopts a detachable structure.

14. The foldable electric wheelchair of claim 13, wherein: the back of back board (3-3) is equipped with couple (3-3-1) or function backplate (3-5), have the space between function backplate (3-5) and back board (3-3), the upper portion of function backplate (3-5) has hangers (3-5-1), still be equipped with bandage hole (3-5-2) on function backplate (3-5), the rear portion of chassis assembly (1) of traveling still is equipped with collet piece (1-8-1) that are located bandage hole (3-5-2) below.

15. The foldable electric wheelchair of claim 13, wherein: the seat board (3-1) is a metal sheet metal part or a plastic injection molding part; when the seat board (3-1) is a metal sheet metal part, the seat board (3-1) is welded and fixed with an upper connecting seat (2-5) of the lifting folding mechanism (2); when the seat board (3-1) is a plastic injection molding piece, the upper connecting seat (2-5) of the lifting folding mechanism (2) is integrally injection molded at the bottom of the seat board (3-1).