CN215960687U

CN215960687U - Adjustable wheel chair

Info

Publication number: CN215960687U
Application number: CN202120328261.1U
Authority: CN
Inventors: 乔莉; 张劲松
Original assignee: Jiangsu Province Hospital First Affiliated Hospital With Nanjing Medical University
Current assignee: Jiangsu Province Hospital First Affiliated Hospital With Nanjing Medical University
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2022-03-08
Anticipated expiration: 2031-02-04

Abstract

The utility model relates to an adjustable novel wheelchair, which comprises a wheelchair frame, wherein a seat plate and a backrest are arranged on the wheelchair frame, wheels and auxiliary wheels are arranged at the lower parts of two sides of the wheelchair frame, and armrests are arranged at two sides of the wheelchair frame; the front side of the wheelchair frame is provided with a pedal support frame, and the lower end of the pedal support frame is provided with a pedal. The pedal plate can be folded upwards to be in a vertical state, the pedal plate support frame can be folded inwards below the seat plate of the wheelchair, a patient can conveniently sit on the wheelchair, the action of striding over the pedal plate is reduced, unnecessary bruising is avoided, the labor degree of family members or medical care personnel is reduced, and the wheelchair is more labor-saving and convenient; the storage space can be greatly saved when the wheelchair is not used; the wheelchair seat plate is provided with the widening plate, when the seat plate is narrow due to the fact that the size of a patient is obese, the armrests can be pulled to the two sides, then the widening plate is laid flat and fixedly hung on the support rod, and therefore the area of the seat is increased, and the wheelchair seat plate is suitable for being used by the patient with the obesity.

Description

Adjustable wheel chair

Technical Field

The utility model relates to an adjustable novel wheelchair, and belongs to the technical field of medical nursing instrument design.

Background

The wheelchair is an important tool commonly used in hospitals, families and many public places, and is mainly used for providing walking assistance for people with limb injuries and mobility disabilities. The common wheelchair generally comprises four parts, namely a wheelchair frame, wheels, auxiliary wheels, a seat plate, a backrest, a brake device and the like, and the common wheelchair can be pushed by a user or the user rotates the wheels to walk. With the development of battery technology, electric wheelchairs with an electric power assisting device added on the basis of common wheelchairs are more and more popular, and physical strength consumption of users can be greatly reduced.

However, the prior wheelchair has the following defects in the use process: (1) the process of 'sitting on a wheelchair' is inconvenient: the pedals of the existing wheelchair are all positioned at the bottom end of the pedal support frame and are in a functional position (namely in an unfolded state) under normal conditions. A patient in need of the wheelchair needs to straddle the footrest, i.e., raise the lower leg and insert the foot between the seat and the footrest. However, most of the patients are old and weak or have obstacles to the movement of the lower limbs, i.e. the movement of the lower limbs is inconvenient, which requires at least two family members or medical staff to complete the action of crossing the pedal plate, i.e. one person holds the patient in balance and the other person is responsible for lifting the leg. Similarly, the wheelchair is moved, and the operation is very inconvenient. (2) "stow the wheelchair" is inconvenient: the pedals and the pedal support frame of the existing wheel are positioned below the front side of the wheelchair main body, and in the process of storage, if the pedal support frame faces a wall body, extra space is occupied; if the chair back faces to the wall, walking of pedestrians is affected, and therefore the existing wheelchair occupies too large space. (3) The adjustability of the "seat cushion" is poor: because the cushion spaces occupied by patients with different body types are different, the cushion of the existing wheelchair is designed according to the patients with the conventional body types, so that the existing wheelchair is small for fat patients, and more patients who are overweight clinically are available at present when the wheelchair is inconvenient to move and even cannot sit down; however, if the widened wheelchair is specially equipped, the wheelchair is not suitable for patients with normal body sizes and thin body sizes, because the patients are inconvenient to fix on the wide wheelchair and may slide off the wheelchair.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides an adjustable novel wheelchair which is ingenious in structure and reasonable in design, a patient does not need to have a step-over pedal action when using the wheelchair, unnecessary bruising is avoided, the labor intensity of family members or medical care personnel is reduced, and the storage space can be greatly saved when the wheelchair is not used.

According to the technical scheme provided by the utility model: the adjustable novel wheelchair comprises a wheelchair frame, wherein a seat plate and a backrest are arranged on the wheelchair frame, wheels and auxiliary wheels are arranged at the lower parts of two sides of the wheelchair frame, and armrests are arranged at two sides of the wheelchair frame; a pedal support frame is arranged at the front side of the wheelchair frame, and a pedal is arranged at the lower end of the pedal support frame; the method is characterized in that: a power supply is installed in the wheelchair frame, a control box is installed on the armrest, the control box is provided with a first control switch and a second control switch, and the first control switch and the second control switch are respectively and electrically connected with the power supply; a sleeve frame is mounted on the two support legs on the front side of the wheelchair frame, a rotating shaft is arranged at the upper end of the pedal support frame, the lower end of the rotating shaft is mounted in the sleeve frame through a bearing assembly, a first speed reducing motor capable of rotating forward and backward is mounted at the lower part of the sleeve frame, an output shaft of the first speed reducing motor is upwards coaxially and fixedly connected with the lower end of the rotating shaft, and the first speed reducing motor is electrically connected with the first control switch; the lower end of the pedal support frame is provided with a hollow shaft, the tail end of the pedal is provided with a mounting hole matched with the hollow shaft, the hollow shaft is arranged in the mounting hole on the pedal in a penetrating manner, and the tail end of the hollow shaft is provided with a limiting cap for positioning the pedal; a fan-shaped notch is dug in the side wall of the middle part of the hollow shaft, a steel skeleton is arranged in the pedal, and the tail end of the steel skeleton extends into an inner hole of the hollow shaft through the fan-shaped notch and is fixedly connected with a small shaft; a second speed reducing motor capable of rotating forward and backward is installed in the hollow shaft, an output shaft of the second speed reducing motor is fixedly connected with one end of a small shaft, the other end of the small shaft is supported in the hollow shaft through a bearing, and the first speed reducing motor is electrically connected with the second control switch; the wheelchair comprises a seat plate, a handrail and a wheelchair frame, wherein the handrail is movably connected with the wheelchair frame, an insertion rod is arranged on the inner side of the lower end of the handrail, an insertion cylinder is arranged on the wheelchair frame, the insertion rod is inserted into the insertion cylinder and can horizontally pull and move, two sides of the seat plate are respectively hinged with two widening plates, a supporting rod is arranged on the lower portion of the handrail, and the widening plates are supported and fixed through the supporting rods after being laid flat.

As a further improvement of the utility model, the tail end of the steel skeleton is L-shaped, the central angle corresponding to the fan-shaped notch is 90 degrees, one side edge of the fan-shaped notch is positioned at the right bottom of the hollow shaft, and the other side edge of the fan-shaped notch is positioned at the right inner side of the hollow shaft.

As a further improvement of the utility model, a clamping groove matched with the shape of the support rod is arranged at the position, close to the outer side edge, of the bottom of the widening plate, and after the widening plate is flatly placed on the support rod, the clamping groove can be correspondingly clamped on the support rod.

As a further improvement of the wheelchair frame, two sides of the wheelchair frame are respectively provided with a stay bar, one end of the stay bar is rotatably connected to the middle cross bars on the two sides of the wheelchair frame, the other end of the stay bar is provided with an arc-shaped buckle, and the arc-shaped buckle can be connected with the lower connecting rod on the handrail and the lower cross bars on the two sides of the wheelchair frame.

As a further improvement of the utility model, the bearing assembly comprises a thrust ball bearing and a deep groove ball bearing, a supporting step is arranged on the inner wall of the sleeve frame, and the thrust ball bearing is arranged above the supporting step; the lower end of the rotating shaft is provided with a shaft head, the outer diameter of the shaft head is smaller than that of the rotating shaft, a positioning step is formed between the shaft head and the rotating shaft, the shaft head is inserted in a thrust ball bearing, an upper seat ring of the thrust ball bearing is abutted against the positioning step, and a lower seat ring of the thrust ball bearing is abutted against a supporting step; the inner ring of the deep groove ball bearing is sleeved on the rotating shaft, and the outer ring of the deep groove ball bearing is fixed in the sleeve frame.

As a further improvement of the utility model, the middle part of the rotating shaft is also provided with a bearing with a seat, and the bearing with the seat is fixed on the wheelchair frame.

As a further improvement of the utility model, the pedal support frame is of a telescopic structure.

As a further improvement of the present invention, the first control switch and the second control switch are remote control switches, remote control end buttons of the first control switch and the second control switch are integrally installed in the control box, receiving end circuit boards of the first control switch and the second control switch are arranged at the power supply and are respectively electrically connected with the power supply, the first speed reduction motor is electrically connected with the receiving end circuit board of the first control switch, and the second speed reduction motor is electrically connected with the receiving end circuit board of the second control switch.

As a further improvement of the utility model, the power supply adopts a rechargeable storage battery.

Compared with the prior art, the utility model has the following advantages:

1) the utility model has ingenious structure and reasonable design, the pedal plate can be folded upwards to be in a vertical state, the pedal plate support frame can be folded inwards below the seat plate of the wheelchair, and a patient can conveniently sit on the wheelchair, so that the action of crossing the pedal plate by using a common wheelchair is reduced, unnecessary gouges are avoided, the labor degree of family members or medical care personnel is reduced, and the wheelchair is more labor-saving and convenient; the wheelchair can greatly save the storage space when not in use.

2) The wheelchair seat plate is provided with the widening plate, when the seat plate is narrow due to the fact that the size of a patient is obese, the armrests can be pulled open towards two sides, and then the widening plate is laid flat and fixedly hung on the support rod, so that the area of the seat is increased, and the wheelchair seat plate is suitable for the patient with the obese figure.

Drawings

FIG. 1 is a front view of the structure of an embodiment of the present invention.

Fig. 2 is a structural side view of an embodiment of the present invention.

Fig. 3 is an enlarged sectional view taken along line a-a in fig. 2.

Fig. 4 is an enlarged sectional view taken along line B-B in fig. 2.

Fig. 5 is an enlarged sectional view taken along line C-C in fig. 4.

Fig. 6 is an electrical control schematic block diagram of an embodiment of the present invention.

Description of reference numerals: 1-wheelchair frame, 2-seat plate, 3-backrest, 4-wheel, 5-auxiliary wheel, 6-armrest, 7-pedal support frame, 8-pedal, 9-power supply, 10-control box, 11-first control switch, 12-second control switch, 13-sleeve frame, 13 a-support step, 14-rotating shaft, 15-first speed reducing motor, 16-hollow shaft, 17-limit cap, 18-steel frame, 19-small shaft, 20-second speed reducing motor, 21-inserted rod, 22-inserted cylinder, 23-widening plate, 24-support rod, 25-clamping groove, 26-support rod, 27-middle cross rod, 28-arc buckle, 29-lower connecting rod, 30-lower cross rod, 31-thrust ball bearing, 32-deep groove ball bearing and 33-bearing with seat.

Detailed Description

The utility model is further illustrated by the following specific figures and examples.

As shown in fig. 1 to 6, the embodiment discloses an adjustable novel wheelchair, which comprises a wheelchair frame 1, wherein a seat 2 and a backrest 3 are mounted on the wheelchair frame 1, wheels 4 and auxiliary wheels 5 are mounted at the lower parts of two sides of the wheelchair frame 1, and handrails 6 are mounted at two sides of the wheelchair frame 1; a pedal support frame 7 is arranged at the front side of the wheelchair frame 1, and a pedal 8 is arranged at the lower end of the pedal support frame 7; a power supply 9 is installed in the wheelchair frame 1, a control box 10 is installed on the armrest 6, the control box 10 is provided with a first control switch 11 and a second control switch 12, and the first control switch 11 and the second control switch 12 are respectively and electrically connected with the power supply 9; sleeve frames 13 are mounted on two supporting legs on the front side of the wheelchair frame 1, a rotating shaft 14 is arranged at the upper end of the pedal supporting frame 7, the lower end of the rotating shaft 14 is mounted in the sleeve frames 13 through a bearing assembly, a first speed reducing motor 15 capable of rotating forward and backward is mounted at the lower part of each sleeve frame 13, an output shaft of the first speed reducing motor 15 is upwards coaxially and fixedly connected with the lower end of each rotating shaft 14, and the first speed reducing motor 15 is electrically connected with the first control switch 11; the lower end of the pedal support frame 7 is provided with a hollow shaft 16, the tail end of the pedal 8 is provided with a mounting hole matched with the hollow shaft 16, the hollow shaft 16 is arranged in the mounting hole on the pedal 8 in a penetrating manner, and the tail end of the hollow shaft 16 is provided with a limiting cap 17 for positioning the pedal 8; a fan-shaped notch 16a is dug in the side wall of the middle part of the hollow shaft 16, a steel skeleton 18 is arranged inside the pedal plate 8, and the tail end of the steel skeleton 18 extends into an inner hole of the hollow shaft 16 through the fan-shaped notch 16a and is fixedly connected with a small shaft 19; a second speed reducing motor 20 capable of rotating forward and backward is installed in the hollow shaft 16, an output shaft of the second speed reducing motor 20 is fixedly connected with one end of a small shaft 19, the other end of the small shaft 19 is supported in the hollow shaft 16 through a bearing, and the first speed reducing motor 15 is electrically connected with the second control switch 12; the wheelchair comprises a wheelchair frame 1, a handrail 6 and a wheelchair frame 1, wherein the handrail 6 is movably connected with the wheelchair frame 1, an insertion rod 21 is arranged on the inner side of the lower end of the handrail 6, an insertion cylinder 22 is arranged on the wheelchair frame 1, the insertion rod 21 is inserted into the insertion cylinder 22 and can be horizontally pulled and moved, two widening plates 23 are respectively hinged to two sides of a seat plate 2, a supporting rod 24 is arranged on the lower portion of the handrail 6, and the widening plates 23 are supported and fixed through the supporting rod 24 after being leveled.

The specific application of the utility model is as follows:

when the wheelchair is not in use, the pedal 8 is folded upwards to be in a vertical state, and the pedal support frame 7 is folded inwards below the seat plate 2 of the wheelchair. When the patient needs to use the wheelchair, open first control switch 11 on the control box 10 earlier, make first gear motor 15 get the electricity and start, first gear motor 15 drives pivot 14 and rotates, make running-board support frame 7 rotatory to the seat the place ahead from seat 2 below, running-board 8 still upwards folds to be the state of erectting this moment, the patient can conveniently sit the wheelchair on, just so reduced the action of "striding across running-board 8" that uses ordinary wheelchair, avoid unnecessary to collide with the wound, alleviate family members or medical personnel's work degree, it is more laborsaving convenient. After a patient sits on the wheelchair, the second control switch 12 is turned on, the second speed reduction motor 20 is powered on to be started, the second speed reduction motor 20 drives the small shaft 19 to rotate, the pedals 890 degrees are unfolded to be in a horizontal state, and the feet of the patient can be comfortably placed on the pedals 8. When a patient gets off the wheelchair, the foot is firstly moved down from the pedal plate 8, then the pedal plate 8 is folded to be in the vertical state by operating the second control switch 12, and the patient does not need to move across the pedal plate 8 when getting off the wheelchair; when the wheelchair is not used, the first control switch 11 is operated to fold the pedal support frame 7 below the seat plate 2 of the wheelchair, so that the storage space can be greatly saved. In addition, when the sitting plate 2 is narrow due to the fact that the size of a patient is relatively fat, the armrests 6 can be pulled to two sides, and the widening plate 23 is laid flat and fixedly hung on the supporting rod 24, so that the seat area is increased, and the chair is suitable for the patient with fat stature.

As shown in fig. 2, in the present embodiment, the end of the steel frame 18 is L-shaped, the central angle of the fan-shaped notch 16a is 90 degrees, one side of the fan-shaped notch 16a is located at the right bottom of the hollow shaft 16, and the other side of the fan-shaped notch 16a is located at the right inner side of the hollow shaft 16. So set up for steel skeleton 18 can only be in fan-shaped notch 16a 90 degrees back and forth swing (horizontal expansion or erect folding) and when running-board 8 level was expanded, the outside limit of steel skeleton 18 just with fan-shaped notch 16a be located the side butt of hollow shaft 16 positive bottom, just so played the effect of location running-board 8.

As shown in fig. 2, in this embodiment, a clamping groove 25 adapted to the shape of the supporting rod 24 is disposed at a position of the bottom of the widening plate 23 near the outer side edge, and after the widening plate 23 is laid flat on the supporting rod 24, the clamping groove 25 can be correspondingly clamped on the supporting rod 24. So set up, the cooperation of widening board 23 through draw-in groove 25 and die-pin 24 joint, the handrail 6 can be fixed a position to the widening board 23 on the one hand, makes handrail 6 can inwards or outwards unexpected removal, and on the other hand die-pin 24 has fixed widening board 23 again, makes widening board 23 can upwards perk, has just so realized widening board 23 and handrail 6's location simultaneously.

As shown in fig. 2, in this embodiment, two sides of the wheelchair frame 1 are further provided with a stay 26, one end of the stay 26 is rotatably connected to a middle crossbar 27 at two sides of the wheelchair frame 1, the other end of the stay 26 is provided with an arc-shaped buckle 28, and the arc-shaped buckle 28 can be connected to a lower connecting rod 29 on the armrest 6 and a lower crossbar 30 at two sides of the wheelchair frame 1. With the arrangement, when the cushion does not need to be widened, the stay bar 26 is not used, and the arc-shaped buckle 28 at the other end of the stay bar 26 is connected to the lower cross bars 30 at two sides of the wheelchair frame 1; when the seat cushion needs to be widened, the armrests 6 are pulled towards two sides, the arc-shaped buckles 28 at the other ends of the supporting rods 26 are taken off from the lower cross rods 30 and then are rotated upwards and connected to the lower connecting rods 29 on the armrests 6, and therefore the function of stabilizing the armrests 6 is achieved.

As shown in fig. 3, in the present embodiment, the bearing assembly includes a thrust ball bearing 31 and a deep groove ball bearing 32, a support step 13a is provided on an inner wall of the sleeve holder 13, and the thrust ball bearing 31 is installed above the support step 13 a; a shaft head 14a is arranged at the lower end of the rotating shaft 14, the outer diameter of the shaft head 14a is smaller than that of the rotating shaft 14, a positioning step is formed between the shaft head 14a and the rotating shaft 14, the shaft head 14a is inserted into the thrust ball bearing 31, an upper seat ring of the thrust ball bearing 31 abuts against the positioning step, and a lower seat ring abuts against the supporting step 13 a; the inner ring of the deep groove ball bearing 32 is sleeved on the rotating shaft 14, and the outer ring is fixed in the sleeve frame 13. With the arrangement, the pedal support frame 7 can bear enough weight and can freely and smoothly rotate. In addition, the middle part of the rotating shaft 14 is also provided with a bearing 33 with a seat, and the bearing 33 with the seat is fixed on the wheelchair frame 1, so that the safety and reliability of the pedal support frame 7 are further improved.

As shown in fig. 1 and 2, in this embodiment, the footrest support frame 7 is of a telescopic structure. So set up, the height of running-board 8 can also carry out lift adjustment as required to satisfy the patient of different heights and use.

In the utility model, the first control switch 11 and the second control switch 12 are preferably remote control switches, remote control end buttons of the first control switch 11 and the second control switch 12 are integrally installed in the control box 10, receiving end circuit boards of the first control switch 11 and the second control switch 12 are arranged at the power supply 9 and are respectively electrically connected with the power supply 9, the first speed reducing motor 15 is electrically connected with the receiving end circuit board of the first control switch 11, and the second speed reducing motor 20 is electrically connected with the receiving end circuit board of the second control switch 12. The remote switch can be selected from conventional products in the prior art, such as SJXX10-12-1 type remote switch in the Shengji technology.

The power source 9 of the present invention is preferably a rechargeable battery.

The wheelchair of the present invention may be a general wheelchair or an electric wheelchair, and in the case of the electric wheelchair, the power supply 9 of the electric wheelchair may be directly used as the power supply 9.

The above description is only for the preferred embodiment of the present invention, and the above specific embodiments are not intended to limit the present invention. Various modifications and alterations may occur to those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and alterations should be accorded the broadest interpretation so as to encompass all such modifications and alterations.

Claims

1. The adjustable novel wheelchair comprises a wheelchair frame (1), wherein a seat plate (2) and a backrest (3) are installed on the wheelchair frame (1), wheels (4) and auxiliary wheels (5) are installed on the lower portions of two sides of the wheelchair frame (1), and handrails (6) are installed on two sides of the wheelchair frame (1); a pedal support frame (7) is arranged at the front side of the wheelchair frame (1), and a pedal (8) is arranged at the lower end of the pedal support frame (7); the method is characterized in that: a power supply (9) is installed in the wheelchair frame (1), a control box (10) is installed on the armrest (6), the control box (10) is provided with a first control switch (11) and a second control switch (12), and the first control switch (11) and the second control switch (12) are respectively and electrically connected with the power supply (9); sleeve frames (13) are mounted on two supporting legs on the front side of the wheelchair frame (1), a rotating shaft (14) is arranged at the upper end of the pedal supporting frame (7), the lower end of the rotating shaft (14) is mounted in the sleeve frames (13) through a bearing assembly, a first speed reducing motor (15) capable of rotating forward and backward is mounted at the lower part of the sleeve frames (13), an output shaft of the first speed reducing motor (15) is upwards coaxially and fixedly connected with the lower end of the rotating shaft (14), and the first speed reducing motor (15) is electrically connected with the first control switch (11); a hollow shaft (16) is arranged at the lower end of the pedal support frame (7), a mounting hole matched with the hollow shaft (16) is formed in the tail end of the pedal (8), the hollow shaft (16) is arranged in the mounting hole in the pedal (8) in a penetrating manner, and a limiting cap (17) for positioning the pedal (8) is arranged at the tail end of the hollow shaft (16); a fan-shaped notch (16a) is dug in the side wall of the middle part of the hollow shaft (16), a steel skeleton (18) is arranged in the pedal plate (8), and the tail end of the steel skeleton (18) extends into an inner hole of the hollow shaft (16) through the fan-shaped notch (16a) and is fixedly connected with a small shaft (19); a second speed reducing motor (20) capable of rotating forward and backward is installed in the hollow shaft (16), an output shaft of the second speed reducing motor (20) is fixedly connected with one end of a small shaft (19), the other end of the small shaft (19) is supported in the hollow shaft (16) through a bearing, and a first speed reducing motor (15) is electrically connected with the second control switch (12); the wheelchair comprises a seat plate (2), and is characterized in that the armrest (6) is movably connected with the wheelchair frame (1), an insertion rod (21) is arranged on the inner side of the lower end of the armrest (6), an insertion tube (22) is arranged on the wheelchair frame (1), the insertion rod (21) is inserted into the insertion tube (22) and can be horizontally pulled and moved, two widening plates (23) are hinged to two sides of the seat plate (2) respectively, a support rod (24) is arranged on the lower portion of the armrest (6), and the widening plates (23) are supported and fixed through the support rod (24) after being leveled.

2. The adjustable new wheelchair as claimed in claim 1, wherein: the tail end of the steel skeleton (18) is L-shaped, the central angle corresponding to the fan-shaped notch (16a) is 90 degrees, one side edge of the fan-shaped notch (16a) is positioned at the right bottom of the hollow shaft (16), and the other side edge of the fan-shaped notch (16a) is positioned at the right inner side of the hollow shaft (16).

3. The adjustable new wheelchair as claimed in claim 1, wherein: the part of the bottom of the widening plate (23) close to the outer side edge is provided with a clamping groove (25) matched with the shape of the support rod (24), and after the widening plate (23) is flatly placed on the support rod (24), the clamping groove (25) can be correspondingly clamped on the support rod (24).

4. The adjustable new wheelchair as claimed in claim 1, wherein: the wheelchair frame is characterized in that supporting rods (26) are further arranged on two sides of the wheelchair frame (1) respectively, one end of each supporting rod (26) is connected to a middle cross rod (27) on two sides of the wheelchair frame (1) in a rotating mode, an arc-shaped buckle (28) is arranged at the other end of each supporting rod (26), and each arc-shaped buckle (28) can be connected with a lower connecting rod (29) on the handrail (6) and connected with lower cross rods (30) on two sides of the wheelchair frame (1).

5. The adjustable new wheelchair as claimed in claim 1, wherein: the bearing assembly comprises a thrust ball bearing (31) and a deep groove ball bearing (32), a supporting step (13a) is arranged on the inner wall of the sleeve frame (13), and the thrust ball bearing (31) is arranged above the supporting step (13 a); a shaft head (14a) is arranged at the lower end of the rotating shaft (14), the outer diameter of the shaft head (14a) is smaller than that of the rotating shaft (14), a positioning step is formed between the shaft head (14a) and the rotating shaft (14), the shaft head (14a) is inserted into the thrust ball bearing (31), an upper race of the thrust ball bearing (31) abuts against the positioning step, and a lower race of the thrust ball bearing (31) abuts against the supporting step (13 a); the inner ring of the deep groove ball bearing (32) is sleeved on the rotating shaft (14), and the outer ring of the deep groove ball bearing is fixed in the sleeve frame (13).

6. The adjustable new wheelchair as claimed in claim 1, wherein: the middle part of the rotating shaft (14) is also provided with a bearing (33) with a seat, and the bearing (33) with the seat is fixed on the wheelchair frame (1).

7. The adjustable new wheelchair as claimed in claim 1, wherein: the pedal support frame (7) is of a telescopic structure.

8. The adjustable new wheelchair as claimed in claim 1, wherein: first control switch (11) and second control switch (12) adopt remote control switch, and the remote control end button integration of first control switch (11) and second control switch (12) is installed in control box (10), and the receiving terminal circuit board setting of first control switch (11) and second control switch (12) is in power (9) department and be connected with power (9) electricity respectively, first gear motor (15) are connected with the receiving terminal circuit board electricity of first control switch (11), and second gear motor (20) are connected with the receiving terminal circuit board electricity of second control switch (12).

9. The adjustable new wheelchair as claimed in claim 1, wherein: the power supply (9) adopts a rechargeable storage battery.