CN212662120U

CN212662120U - Multifunctional wheelchair

Info

Publication number: CN212662120U
Application number: CN202021910083.5U
Authority: CN
Inventors: 薛强; 张守威; 李敏; 韩小龙
Original assignee: Tianjin University of Science and Technology
Current assignee: Tianjin University of Science and Technology
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-03-09
Anticipated expiration: 2030-09-04

Abstract

A multifunctional wheelchair is characterized by comprising a wheelchair and an auxiliary standing device detachably arranged on the wheelchair, wherein the wheelchair comprises a wheelchair frame, a brake mechanism rotatably arranged on the wheelchair frame, a push handle slidably inserted on the wheelchair frame, the auxiliary standing device comprises a base frame with an opening at the rear part, a supporting arm rotatably arranged on the base frame, a first electric push rod rotatably arranged between the supporting arm and the base frame, an armrest rotatably arranged on the supporting arm, a second electric push rod rotatably arranged between the armrest and the supporting arm, an elbow support slidably inserted on the armrest, a knee support fixedly arranged at the front end of the base frame, and a pedal rotatably arranged on the knee support. The utility model discloses a multifunctional wheelchair, supplementary device of standing can follow the utility model discloses well separation out can assist the patient to shift between other places and wheelchair.

Description

Multifunctional wheelchair

Technical Field

The utility model relates to the technical field of rehabilitation appliances, in particular to a multifunctional wheelchair.

Background

For patients with lower limb dysfunction, movement in daily life is very difficult for them, and therefore assistance such as a wheelchair is required to help them solve the problem of movement in life. In addition, when the patient needs to move or perform other activities, the patient needs to stand from a bed, a toilet seat and the like and transfer to a wheelchair, or stand from the wheelchair and transfer to the bed, the toilet seat and the like, so that the patient also needs to sit and stand with an auxiliary tool to help the patient to complete the sitting and standing conversion. And the patient still needs the walking training in daily life, because effectual walking training can reduce the risk of low limbs muscular atrophy, helps the recovered of low limbs.

Currently, in the wheelchair on the market, the problem that a patient with lower limb dysfunction gets on or off the wheelchair is considered a little, and a nursing staff is usually needed to help the patient to transfer to the wheelchair or from the wheelchair to a bed, a toilet and other parties by means of another auxiliary tool. In addition, when the patient is in walking training, other walking aids are often needed for realizing the walking training. Therefore, it is necessary to develop a multifunctional wheelchair that can satisfy the patient's needs for movement and patient's needs for transfer, and also can satisfy the patient's daily walking training.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the technical defects in the prior art, and provides a multifunctional wheelchair which can realize the movement of the old, the weak and the lower limb dysfunction person, the standing and the walking-aid training.

For realizing the utility model discloses a technical scheme that the purpose adopted is:

a multifunctional wheelchair is characterized by comprising a wheelchair and an auxiliary standing device detachably arranged on the wheelchair, wherein the wheelchair comprises a wheelchair frame, a brake mechanism rotatably arranged on the wheelchair frame, a push handle slidably inserted on the wheelchair frame, the auxiliary standing device comprises a base frame with an opening at the rear part, a supporting arm rotatably arranged on the base frame, a first electric push rod rotatably arranged between the supporting arm and the base frame, an armrest rotatably arranged on the supporting arm, a second electric push rod rotatably arranged between the armrest and the supporting arm, an elbow support slidably inserted on the armrest, a knee support fixedly arranged at the front end of the base frame, and a pedal rotatably arranged on the knee support.

Wheelchair frame include the support frame, fixed the setting is in by the grillage on the support frame, fixed the setting is in seat grillage on support frame and the back-up frame, fixed the setting is in chassis connecting piece on the support frame is fixed the setting is in stopper on the support frame, the stopper on be provided with the screw hole, rotationally set up hand push wheel on the chassis connecting piece, the chassis connecting piece on be provided with the screw hole, rotationally set up the anterior front wheel of support frame is fixed the setting is in guide way on support frame and the stopper, seat grillage on the fixed bedplate that is provided with, the grillage on fixed back-up plate that is provided with.

The brake mechanism comprises a brake handle, a brake rocker, a friction column, a connecting rod, a blocking piece and a limiting column, wherein the brake handle and the brake rocker are rotatably arranged on the wheelchair frame, a spring is arranged between the brake handle and the wheelchair frame, the connecting rod is rotatably arranged between the brake handle and the brake rocker, the blocking piece is rotatably arranged on the wheelchair frame, the limiting column is fixedly arranged on the wheelchair frame, a fastening nut is arranged at the front end of the limiting column, a rubber sleeve is fixedly arranged on the brake handle, and the friction column is fixedly arranged on the brake rocker.

The push handle comprises a handle frame, a handle sleeve and a pipe clamp, the handle frame can be inserted into the wheelchair frame in a sliding mode, the handle frame is fixed through the pipe clamp, and the handle sleeve is fixedly arranged on the handle frame.

The chassis include U type frame, two first truckle bracing pieces, two second truckle bracing pieces, pole setting in the middle of four, two third truckle bracing pieces and four leading wheels, U type frame and first truckle bracing piece be in the same place through middle pole setting fixed connection, U type frame end be provided with the locking groove, the locking groove on be provided with first locking screw hole and first chassis locking screw, U type frame on be provided with the leading wheel mounting hole on the inboard, the two liang of level symmetry ground of leading wheel mounting hole set up the both sides at U type frame, the leading wheel mounting hole on rotationally be provided with the leading wheel, U type frame outside be provided with second locking screw hole and second chassis locking screw.

The second caster supporting rod is slidably inserted into the first caster supporting rod, a threaded hole is formed in the second caster supporting rod, the first caster supporting rod is provided with a threaded hole and a first positioning screw, the third caster supporting rod is rotatably arranged on the U-shaped frame, a supporting rod fixing threaded hole is formed in the U-shaped frame, and a threaded hole and a second positioning screw are formed in the third caster supporting rod.

The knee support comprises a knee supporting rod, a telescopic rod, a supporting cross rod and a knee supporting plate, wherein the knee supporting rod is fixedly arranged on the base frame, the telescopic rod is inserted on the knee supporting rod in a sliding mode, a plurality of threaded holes are formed in the telescopic rod, a threaded hole and a third positioning screw are arranged on the knee supporting rod, the supporting cross rod is inserted on the telescopic rod in a sliding mode, a plurality of threaded holes are formed in the supporting cross rod, a threaded hole and a fourth positioning screw are arranged on the upper portion of the telescopic rod, and the knee supporting plate is fixedly arranged on the supporting cross rod.

The pedal comprises a pedal and a rubber gasket, the pedal is rotatably arranged on the knee support, and the rubber gasket is arranged between the pedal and the knee support to increase damping.

The handrail include and hold up the arm, table grillage and table, the handrail arm rotationally set up the support arm on, the table grillage fixed set up hold up the arm on, the table fixed set up the table grillage on.

The elbow support comprises an elbow supporting plate and an L-shaped support, the L-shaped support is inserted into the armrest in a sliding mode, a threaded hole and a fifth positioning screw are formed in the armrest, a threaded hole is formed in the L-shaped support, and the elbow supporting plate is fixedly arranged on the L-shaped support.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a multi-functional wheelchair is a collection and shifts, removes, helps capable multi-functional wheelchair as an organic whole, to the old and weak person of different degrees, low limbs dysfunction person and other inconvenient patients of moving, the utility model discloses a multi-functional wheelchair not only can satisfy the patient to the demand of wheelchair basic function, can also help them to realize shifting and help capable. Separable design makes the supplementary device of standing can follow the utility model discloses a separate out in the multi-functional wheelchair, help the patient shift and help the capable. The adjustable knee support can be adjusted in height and fore-aft position depending on the height and position of the patient. The design of the third caster supporting rod can enable the structure of the underframe to be more stable. The semi-enclosed elbow rest may be easier to use when the patient stands up.

Drawings

FIG. 1 is a separated view of the multifunctional wheelchair of the present invention

Figure 2 shows a structural view of a wheelchair

FIG. 3 is a structural view of the standing aid

FIG. 4 is a view showing the structure of the wheelchair frame

FIG. 5 is a schematic view showing the relative positions of the wheelchair and the device for assisting standing and sitting

FIG. 6 is a view showing an assembled state

Figure 7 shows a view of the undercarriage structure

FIG. 8 shows a pedal structure attempt

FIG. 9 is a view of the brake mechanism

FIG. 10 is a view showing the structure of a push handle

Figure 11 shows a view of the knee support structure

Figure 12 shows a view of the armrest and elbow rest structure

Figure 13 is an overall view of the multifunctional wheelchair of the present invention

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

as shown in fig. 1, 2 and 3, the multifunctional wheelchair of the present invention comprises a wheelchair 1 and a standing assist apparatus 2 detachably provided on the wheelchair, the wheelchair comprising a wheelchair frame 11, a brake mechanism 12 which is rotatablely arranged on the wheelchair frame, a push handle 13 which is slidably inserted on the wheelchair frame, the auxiliary standing device comprises a chassis 21 with an opening at the rear part, a support arm 22 rotatably disposed on the base frame, a first electric push rod 23 rotatably disposed between the support arm and the base frame, a hand rest 24 rotatably disposed on the support arm, a second electric push rod 25 rotatably disposed between the hand rest and the support arm, an elbow rest 26 slidably inserted into the armrest, a knee support 27 fixedly provided at a front end of the base frame, and a foot board 28 rotatably provided on the knee support.

The utility model discloses a multi-functional wheelchair can realize the function of removal. The utility model discloses a multi-functional wheelchair uses the patient to sit when bed as an example, realizes moving function main operation and divide into following five steps, and first step, the auxiliary patient stands, and the second step, the auxiliary patient sits down, and the third step, the combination wheelchair, the fourth step, the position of adjustment brake truckle, the fifth step is put patient's foot on the running-board. Specifically, in a first step, the patient is assisted in standing. When the patient sits at the bedside, as shown in fig. 1 and 3, the nursing staff pushes the auxiliary standing device 2 to the front of the patient's bed, and the braking is performed by using the brake caster. The patient's arm is placed on the arm rest 24 and his elbow is placed on the bottom of the elbow rest 26, so that the patient can grasp the arm rest 24 with his hands and his knees are against the knee support 27. The second electric push rod 25 is driven to enable the handrail 24 to incline upwards, and then the first electric push rod 23 is driven to enable the supporting arm 22 to rotate, so that the handrail 24 is driven to do clockwise circular motion, and the patient can finish the sitting-to-standing conversion.

And secondly, assisting the patient to sit down. After the patient has completed assisted standing, the wheelchair 1 is left to move forward a distance by means of the said assisted standing device, as shown in figures 1, 2, 3 and 4. The caregiver then pushes the handle 13 to push the wheelchair 1 to the patient's back, the seat plate 1109 of the wheelchair 1 is brought into close proximity to the patient's thighs, and the brake mechanism 12 is pulled downward to secure the wheelchair. The caregiver drives the first electric push rod 23 to assist the patient in sitting on the wheelchair 1 and then drives the second electric push rod 25 to gradually level the armrest 24.

And thirdly, combining the wheelchair. After the patient sits, the auxiliary standing device is continuously pushed towards the wheelchair. As shown in fig. 4, 5, 6 and 7, one end of the guiding slot 1108 is horizontally and fixedly disposed on the wheelchair frame 11, and the other end thereof is inclined downward, and the guiding wheel 2106 rolls along the guiding slot 1108 obliquely upward, so that the entire bottom frame 21 gradually moves upward to drive the caster to lift off the ground. When the guide wheel 2106 rolls along the guide groove 1108 to the position of the limit block 1105, the first chassis locking screw 2108 and the second chassis locking screw 2109 are tightened, so as to lock the chassis 21 to complete the combination of the wheelchair 1 and the 2 auxiliary standing device.

And fourthly, adjusting the position of the brake caster. As shown in fig. 5, the third caster support rod 2105 is rotatably disposed on the U-shaped frame 2101, the third caster support rod is provided with a threaded hole and a second positioning screw 2111, the second caster support rod 2103 is slidably inserted into the first caster support rod 2102, the second caster support rod 2103 is provided with a threaded hole, and the first caster support rod 2102 is provided with a threaded hole and a first positioning screw 2110. Specifically, the second set screw 2111 is unscrewed, the third caster support rod 2105 is rotated upward until the second set screw is aligned with the support rod fixing threaded hole of the U-shaped frame 2101, and the second set screw is tightened to fix the third caster support rod 2105. The second caster support rod 2103 is pulled backwards to align the two threaded holes, the first positioning screw 2110 is screwed, the second caster support rod is fixed, and the position of the brake caster is adjusted. As shown in fig. 13, the multifunctional wheelchair of the present invention is in a moving state.

And fifthly, putting the feet of the patient on the pedal. As shown in fig. 8, the foot pedal 28 is rotatably disposed on the knee support bar 2701, a rubber gasket 2702 is disposed between the foot pedal 28 and the knee support bar 2701 to increase damping, and the foot pedal 28 is turned downward to make the foot pedal 28 in a horizontal state, so that the feet of the patient can be placed on the foot pedal. The patient can move by sitting on the wheelchair completely.

Further, when the patient pushes the wheelchair to move, in order to increase the safety, a brake mechanism is rotatably arranged on the wheelchair. The brake mechanism is divided into two states, one is an unfixed state, the patient can brake when moving in the unfixed state, and the other is a fixed state, and the wheelchair can be fixed by the brake mechanism in the unfixed state. As shown in fig. 9, the braking mechanism 12 includes a braking handle 1201, a braking rocker 1202, a friction column 1203, a connecting rod 1204, a blocking piece 1207 and a limiting column 1208, the braking handle 1201 and the braking rocker 1202 are rotatably disposed on the wheelchair frame 11, the connecting rod 1203 is rotatably disposed between the braking handle 1201 and the braking rocker 1202, the limiting column 1208 is fixedly disposed on the wheelchair frame 11, and a fastening nut 1209 is disposed at a front end of the limiting column 1208. When a patient brakes in the moving process, the brake mechanism is in an unfixed state. Specifically, the brake handle 1201 is pulled backwards to drive the connecting rod 1204 to move, the connecting rod 1204 continues to drive the brake rocker 11202 to rotate clockwise and downwards, a friction column 1203 is fixedly arranged on the brake rocker 1202, and the friction column 1203 presses the hand push wheel 1106 to generate friction, so that braking is performed. When the wheelchair needs to be fixed, the brake mechanism is in a fixed state. Specifically, the fastening nut 1209 is loosened, the blocking piece 1207 is rotated downward, the first notch of the blocking piece is separated from the limiting column 1208, the fixing state of the blocking piece is released, the blocking piece 1207 is continuously rotated, the second notch of the blocking piece is clamped on the rotating shaft between the brake handle 1201 and the connecting rod 1204, and at this time, the brake mechanism can be fixed, so that the wheelchair is fixed. In order to increase comfort, a rubber sleeve 1206 is fixedly arranged on the brake handle 1201.

Further, for the convenience of nursing staff promote the utility model discloses a multifunctional wheelchair, the promotion handle adjust from top to bottom, as shown in fig. 10, handle frame 1301 insert with sliding wheelchair frame 11 on, the wheelchair frame on be provided with pipe clamp 1302, loosen pipe clamp 1302, the regulation about pulling handle frame 1301 from top to bottom in order to realize promoting handle 13, the handle frame on be provided with handle cover 1303 and make the nursing staff more comfortable when the gripping.

The utility model discloses a multi-functional wheelchair can also realize the function of shifting. When the patient sits on the utility model discloses a multifunctional wheelchair, when nursing staff promoted the patient to bedside or other places, the patient can pass through supplementary device of standing accomplish to sit the conversion of standing, then with the help of supplementary device of standing transfer to person's bed or other places. Specifically, at first, the standing assistance device is separated from the multifunctional wheelchair of the present invention. As shown in fig. 6 and 7, the first positioning screw 2108 is unscrewed to pull out the second caster support rod 2103, the second positioning screw 2109 is unscrewed, and the third caster support rod 2105 is rotated downward, so that the second positioning screw 2109 is engaged with the threaded hole of the second caster support rod 2103, and the second positioning screw 2109 is tightened to fix the caster. And unscrewing a first chassis locking screw 2108 and a second chassis locking screw 2109, and pulling out the auxiliary standing device 2 until front and rear casters of the auxiliary standing device contact the ground. Secondly, the auxiliary standing device assists the patient to stand, the brake caster is loosened to release the brake, and the patient can transfer by means of the auxiliary standing device.

The multifunctional wheelchair of the utility model can also realize the function of walking aid. When the patient is located the open air, the patient sits on the wheelchair, will assist the device of standing to follow the utility model discloses a separate out in the multi-functional wheelchair, supplementary patient accomplishes the conversion of sitting to the station, then can be directly with the help of supplementary device of standing supplementary walking. When the patient is positioned indoors and sits on a bed, a sofa or other places, the standing assisting device can be directly pushed to the front of the patient to assist the patient to complete the conversion from sitting to standing, and then the patient is assisted to walk.

Further, the knee support can be adjusted in up-down and front-back positions in order to accommodate the height and position of the patient. As shown in fig. 11, the telescopic bar 2702 is slidably inserted into the knee support bar 2701, the knee support bar 2701 is provided with a screw hole and a third set screw 2705, and the telescopic bar 2702 is provided with a plurality of screw holes. Specifically, the third positioning screws 2705 on both sides are unscrewed, the telescopic bar 2702 is pulled up and down to align the screw holes, and then the third screws 2705 are tightened to fix the knee brace 27, thereby completing the vertical adjustment of the knee brace 27. The support cross bar 2703 is inserted in the upper part of the telescopic bar 2702 in a sliding manner, the upper part of the telescopic bar 2702 is provided with a threaded hole and a fourth positioning screw 2706, the support cross bar 2703 is provided with a plurality of threaded holes, specifically, the fourth positioning screw 2706 is unscrewed, the support cross bar 2703 is pulled back and forth, after the threaded holes are aligned, the fourth positioning screw 2706 is screwed down to fix the support cross bar 2703, and the adjustment of the front and rear positions of the knee support 27 is completed.

In order to adapt to the upper body height and elbow position of different people, the elbow support can be adjusted back and forth relative to the position of the armrest. As shown in fig. 12, the toggle bracket 26 includes an L-shaped bracket 2602 and a toggle plate 2601, the L-shaped bracket 2602 is slidably inserted into the armrest arm 2401, the armrest arm 2401 is provided with a threaded hole and a fifth set screw 2405, the L-shaped bracket 2602 is provided with a plurality of threaded holes, and the toggle plate 2701 and the L-shaped bracket 2602 are fixedly connected together by bolts. Specifically, the fifth set screw 2405 is unscrewed, the L-shaped bracket 2602 is pulled out, the threaded holes are aligned, and then the fifth set screw 2405 is tightened to fix the bracket, thereby completing the adjustment of the toggle bracket position. Preferably, the wrist rest plate 2701 is designed in a semi-surrounding manner, so that the patient can use the wrist rest plate easily to prevent danger.

Furthermore, in order to facilitate the movement of the patient, a small table plate is arranged on the arm supporting arm. As shown in fig. 12, the armrest includes an armrest arm 2401, a table frame 2402 and a table 2403. A desk plate frame 2402 is fixedly arranged on the armrest arm 2401, and the desk plate 2403 is fixedly arranged on the desk plate frame 2402 through screws. Preferably, a foam pad or other easily graspable accessory is disposed on the arm 2401 for enhancing the user experience.

To sum up, the utility model discloses a multi-functional wheelchair is a collection and shifts, removes, helps capable multi-functional wheelchair as an organic whole, to the old and weak person of different degrees, low limbs dysfunction person and other inconvenient patients of moving, the utility model discloses a multi-functional wheelchair not only can satisfy the patient to the demand of wheelchair basic function, can also help them to realize shifting and help capable. Separable design makes the supplementary device of standing can follow the utility model discloses a separate out in the multi-functional wheelchair, help the patient shift and help the capable. The adjustable knee support can be adjusted in height and fore-aft position depending on the height and position of the patient. The design of the third caster supporting rod can enable the structure of the underframe to be more stable. The semi-enclosed elbow rest may be easier to use when the patient stands up.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A multifunctional wheelchair is characterized by comprising a wheelchair and an auxiliary standing device detachably arranged on the wheelchair, wherein the wheelchair comprises a wheelchair frame, a brake mechanism rotatably arranged on the wheelchair frame, a push handle slidably inserted on the wheelchair frame, the auxiliary standing device comprises a base frame with an opening at the rear part, a supporting arm rotatably arranged on the base frame, a first electric push rod rotatably arranged between the supporting arm and the base frame, an armrest rotatably arranged on the supporting arm, a second electric push rod rotatably arranged between the armrest and the supporting arm, an elbow support slidably inserted on the armrest, a knee support fixedly arranged at the front end of the base frame, and a pedal rotatably arranged on the knee support.

2. The multifunctional wheelchair as claimed in claim 1, wherein the wheelchair frame comprises a support frame, a backrest frame fixedly arranged on the support frame, a seat frame fixedly arranged on the support frame and the backrest frame, an underframe connecting piece fixedly arranged on the support frame, a limiting block fixedly arranged on the support frame, a threaded hole arranged on the limiting block, a hand push wheel rotatably arranged on the underframe connecting piece, a threaded hole arranged on the underframe connecting piece, a front wheel rotatably arranged at the front part of the support frame, and a guide groove fixedly arranged on the support frame and the limiting block, wherein a seat board is fixedly arranged on the seat frame, and a backrest plate is fixedly arranged on the backrest frame.

3. The multifunctional wheelchair as claimed in claim 1, wherein the brake mechanism comprises a brake handle, a brake rocker, a friction column, a connecting rod, a blocking piece and a limiting column, the brake handle and the brake rocker are rotatably arranged on the wheelchair frame, a spring is arranged between the brake handle and the wheelchair frame, the connecting rod is rotatably arranged between the brake handle and the brake rocker, the blocking piece is rotatably arranged on the wheelchair frame, the limiting column is fixedly arranged on the wheelchair frame, a fastening nut is arranged at the front end of the limiting column, a rubber sleeve is fixedly arranged on the brake handle, and the friction column is fixedly arranged on the brake rocker.

4. The multifunctional wheelchair as claimed in claim 1, wherein the push handle comprises a handle frame, a handle sleeve and a pipe clamp, the handle frame is slidably inserted into the wheelchair frame, the handle frame is fixed by the pipe clamp, and the handle sleeve is fixedly arranged on the handle frame.

5. The multifunctional wheelchair as claimed in claim 1, wherein the base frame comprises a U-shaped frame, two first caster support bars, two second caster support bars, four middle vertical bars, two third caster support bars and four guide wheels, the U-shaped frame and the first caster support bars are fixedly connected together through the middle vertical bars, a locking groove is formed at the end of the U-shaped frame, a first locking threaded hole and a first base frame locking screw are formed in the locking groove, guide wheel mounting holes are formed in the inner side of the U-shaped frame, the guide wheel mounting holes are horizontally and symmetrically formed in two sides of the U-shaped frame in pairs, the guide wheel mounting holes are rotatably provided with the guide wheels, and a second locking threaded hole and a second base frame locking screw are formed in the outer side of the U-shaped frame.

6. The multifunctional wheelchair as claimed in claim 5, wherein the second caster support bar is slidably inserted into the first caster support bar, the second caster support bar is provided with a threaded hole, the first caster support bar is provided with a threaded hole and a first set screw, the third caster support bar is rotatably provided on the U-shaped frame, the U-shaped frame is provided with a support bar fixing threaded hole, and the third caster support bar is provided with a threaded hole and a second set screw.

7. The multifunctional wheelchair as claimed in claim 1, wherein the knee support comprises a knee support bar, a telescopic bar, a support cross bar and a knee support plate, the knee support bar is fixedly disposed on the base frame, the telescopic bar is slidably inserted into the knee support bar, the telescopic bar is provided with a plurality of threaded holes, the knee support bar is provided with a threaded hole and a third set screw, the support cross bar is slidably inserted into the telescopic bar, the support cross bar is provided with a plurality of threaded holes, the upper portion of the telescopic bar is provided with a threaded hole and a fourth set screw, and the knee support plate is fixedly disposed on the support cross bar.

8. The multi-function wheelchair of claim 1 wherein said footrests comprise pedals and rubber grommets, said pedals being rotatably mounted on said knee supports, and rubber grommets being provided between said pedals and said knee supports to increase damping.

9. The multifunctional wheelchair as claimed in claim 1, wherein the armrests comprise an armrest arm, a table frame and a table, the armrest arm is rotatably disposed on the support arm, the table frame is fixedly disposed on the armrest arm, and the table is fixedly disposed on the table frame.

10. The multifunctional wheelchair as claimed in claim 1, wherein the elbow rest comprises an elbow rest plate and an L-shaped bracket, the L-shaped bracket is slidably inserted into the armrest, the armrest is provided with a threaded hole and a fifth set screw, the L-shaped bracket is provided with a threaded hole, and the elbow rest plate is fixedly disposed on the L-shaped bracket.