CN209172850U - A walking aid device for the elderly - Google Patents

Abstract

The utility model relates to a walking aid device for the elderly, which mainly includes: a push handle; a seat; a lifting handrail; a frame; a sitting board; a fixed shell; a pedal; Coupling; gear; rack; rack chute; gear motor, etc. The utility model realizes the lifting function of the armrest through the lifting structure of the rack and pinion; the folding of the seat plate and the pedal provides enough space for walking. The utility model can realize three functions of pushing, electric walking aid and electric wheelchair. The structure is simple and the use is convenient.

Description

A walking aid device for the elderly

technical field

The utility model relates to a wheelchair, in particular to walking aid equipment for the elderly.

Background technique

According to the research report of the National Office on Aging, my country has entered the stage of aging. In this stage, China will add an average of 5.96 million elderly people every year. By 2020, the elderly population will reach 250 million, and the number of patients with various geriatric diseases is increasing year by year. , Nursing resources become relatively scarce. With the continuous increase of the aging population, the most notable feature is that the elderly have poor eyesight, weak body, muscle weakness, and inconvenient walking, which seriously affect the quality of daily life of the elderly. Simple walking aids on the market are too simple in function and insufficient in safety, while high-end intelligent walking aids are too expensive to be accepted by most elderly people. In order to support and improve the daily walking assistance needs of the elderly, it aims to develop a walking aid wheelchair with complete functions, safety, light weight and reasonable price that can be accepted by ordinary elderly people.

SUMMARY OF THE INVENTION

The utility model mainly aims at the deficiencies in the prior art, and provides an easy-to-use and fully functional walking aid for the elderly who are weak in body, weak in muscles, and inconvenient to walk, and is suitable for daily walking exercises of the elderly. The three functions of pushing, electric walking aid, and electric wheelchair are realized through a simple structure.

For realizing above object, the solution of the present utility model is as follows:

On the basis of the electric wheelchair, the utility model proposes an improvement to the existing electric wheelchair. In addition to the implementation of the electric wheelchair and the electric wheelchair mode, the electric walking aid mode is proposed, that is, the user stands inside the electric walking aid and assists The bracket and four wheels of the walker provide support for the user's walking; in addition, the user can also use the motor of the electric wheelchair to drive the wheels of the wheelchair to move slowly, providing assistance for the user's walking rehabilitation.

In order to make the electric wheelchair have the function of an electric walking aid, the technical solution of the utility model should solve the following technical problems, namely: (1) The standing problem of the user in the electric walking aid mode, that is, the seat of the existing wheelchair cannot be retracted (2) The grip problem in the electric walking aid mode, because the arm position of the user in the standing position is often much higher than that in the sitting position, it is necessary to An armrest capable of holding a wheelchair frame inside a wheelchair in a standing posture is proposed.

Based on the above technical problems, the utility model focuses on improving the seat board and handrail of the existing electric wheelchair, and proposes a walking aid device for the elderly that can provide electric walking assistance for users.

Specific technical solutions include:

A seat board that can be switched between a supported state and an unsupported state. When the seat board is in the supporting state, the supporting surface of the seat board is in a horizontal position, and the connection between the seat and the seat board limits the displacement of the seat board, so that the seat board can sufficiently support the user to sit on the seat board in a sitting posture. When the seat board is in the non-supporting state, the seat board is retracted from the middle of the seat, which is used to free up the standing space of the user in the middle of the seat, so that the user can stand in the middle of the multi-functional walking-assist electric wheelchair and adopt the electric walking-assist mode to assist walk. as well as,

A height-adjustable armrest, the armrest is installed on the seat back of the seat through a vertical displacement device with a fixing device, and is used to allow the user to adjust and fix the height of the armrest through the vertical displacement device with a fixing device.

The vertical displacement device with a fixing device includes a fixing case, a reduction motor, a gear, a rack chute, and a rack. The back cover of the seat is fixedly connected with a fixed shell, a motor fixing frame, and a vertically installed rack chute. An armrest slider is installed inside the fixed shell, and a rack is installed inside the rack chute, and the rack is fixedly connected with the armrest slider to make the armrest slider vertically displace along the seat back under the drive of the rack. . A deceleration motor is installed on the motor fixing frame, and the output shaft of the deceleration motor is connected to the gear shaft of the gear through a coupling. Displacement occurs in the slot along the rack chute. The armrest slider is fixedly connected with an armrest, which is used to enable the user to lean on the multifunctional walking-assisting electric wheelchair in the electric wheelchair mode and the electric walking-assisting mode. Both the fixed shell and the backrest side cover of the seat are provided with an open space on the lifting track of the armrest, which is used to allow the user to adjust the height of the armrest through the armrest slider.

The utility model realizes the handrail lifting function through the rack and pinion lifting mechanism. Taking full account of the size of the elderly, the lifting size of the handrail is designed at 200mm to adapt to different heights of the elderly.

The footrest and the seat board are designed as a foldable structure, and the hinge branch has a limit function in the horizontal direction to ensure that the seat board can only be folded vertically upwards, providing enough space for walking.

The utility model is designed with push handles and handrails, so that there are two different modes of walking aid exercise.

Specifically, the walking aid equipment for the elderly provided by this patent includes a push handle, a seat, a rear wheel, a front wheel, and a frame. The seat is fixedly connected to the frame, and a pair of front wheels and a pair of rear wheels are connected to the lower part of the frame. Make the assembly of frame, seat, front wheels, and rear wheels have the outline of a wheelchair. The chair back of the seat is fixedly connected with a push handle, so that the user can push the walking aid device for the elderly to move through the push handle.

The back cover of the seat is fixedly connected with a fixed shell, a motor fixing frame, and a vertically installed rack chute. An armrest slider is installed inside the fixed shell, and a rack is installed inside the rack chute, and the rack is fixedly connected with the armrest slider to make the armrest slider vertically displace along the seat back under the drive of the rack. . A deceleration motor is installed on the motor fixing frame, and the output shaft of the deceleration motor is connected to the gear shaft of the gear through a coupling. Displacement occurs in the slot along the rack chute.

The handrail slider is fixedly connected to the handrail, which is used to enable the user to lean on the walking aid equipment for the elderly in the electric wheelchair mode and the electric walking aid mode. Both the fixed shell and the backrest side cover of the seat are provided with an open space on the lifting track of the armrest, which is used to allow the user to adjust the height of the armrest through the armrest slider.

The seat board of the seat is connected with the seat through a hinge branch chain, and the hinge branch chain is provided with a limit block at the position where the seat board moves to a horizontal position, which is used for the user to sit on the seat in a sitting posture in the electric wheelchair mode. The seat board plays a supporting role in the chair.

The wheel fork of the front wheel is hinged with the frame, and is used to change the direction of movement of the front wheel with the force, thereby playing the role of a guide wheel.

The drive motor is installed at the bottom of the frame, and the output end of the drive motor is connected to the rear wheel; a 24V/10A lithium-ion battery is selected as the power supply for powering electrical equipment such as the drive motor and the reduction motor. It should be noted that the circuit connection relationship between the power supply and the electrical equipment and the control method are mature technologies that are easily available in the field of electric wheelchair technology. Those skilled in the art should understand that by adding electrical components such as switches and variable resistors to the circuit connection between the power supply and the motor, the purpose of driving the motor to drive the rear wheels to make the walking aid run can be realized; further, those skilled in the art can also Based on the prior art, by introducing control circuits such as single-chip microcomputers, combined with single-chip microcomputer programming and control elements, the control of the walking aid device of this patent is realized. Those skilled in the art should also understand that the above-mentioned circuit connection relationship and control method do not belong to the content involved in the technical problem to be solved by this patent, so this patent will not repeat them any further.

In order to save the overall space of the equipment, the lithium-ion battery is placed inside the back cover of the backrest. Of course, for considerations such as convenient replacement of the lithium-ion battery, the lithium-ion battery can also be installed outside the back cover of the seat.

The lower part of the frame is also hinged with the foot pedals, which is used to enable the user to remove the foot pedals from the front of the walking aid equipment for the elderly when entering the equipment to facilitate entry, and is used to enable the user to move the foot pedals after entering the equipment. The pedals move into the front of the elderly mobility aid to support the user's feet.

The seat board includes a pair of oppositely opened support boards, and the two seat boards are respectively hinged to the side of the seat through two hinge chains.

The hinge of the pedal and the frame is a vertical hinge, which is used to make the pedal horizontally rotate along the axis of rotation on the frame; the hinge of the front wheel and the frame is a vertical hinge, Used to allow the front wheels to rotate horizontally along the axis of rotation on the frame.

The utility model realizes the lifting of the handrail in the vertical direction through a simple rack and pinion lifting mechanism, and has a simple structure and is easy to realize.

Compared with the prior art, the utility model has the following beneficial technical effects: the front wheel is a universal wheel, and the rear wheel is a driving wheel, so the utility model can be used flexibly. The frame structure is light and stable, providing safety guarantee for users. The rack and pinion lifting mechanism is adopted, with simple structure and stable transmission. There are push handles and armrests on the seat, and there are two ways to assist walking. The adjustable range of armrest lifting size is large, which is suitable for elderly people of different heights.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is the overall structural representation of the utility model;

Fig. 3 is a schematic diagram of the overall side structure of the utility model;

Fig. 4 is a schematic diagram of the internal lifting structure of the utility model;

Fig. 5 is a partially enlarged schematic diagram of the pedal joint of the present invention;

Fig. 6 is a partially enlarged schematic diagram of the hinge branch of the present invention;

Fig. 7 is the partially enlarged schematic view of the front wheel of the present utility model;

Figure 8 is a handrail lifting dimension diagram of the utility model;

Fig. 9 is a schematic diagram of the implementation mode of the utility model;

Fig. 10 is a schematic diagram of the electric walking aid mode of the utility model;

Fig. 11 is a schematic diagram of the wheelchair mode of the present invention.

In the figure: 1, push handle; 2, back cover; 3, seat; 4, armrest; 5, rear wheel; 6, front wheel; 7, pedal; 8, frame; 9, seat board; 10, Hinge branch chain; 11, fixed shell; 12, motor; 13, motor fixed frame; 14, back cover lower cover; 15, gear; 16, coupling; 17, rack chute; 18, rack; 19, drive Motor; 20, backrest side cover; 21, armrest slider; 22, limit block.

Detailed ways

The utility model will be described in further detail below in conjunction with the accompanying drawings, which is an explanation of the utility model rather than a limitation.

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the utility model relates to a walking aid for the elderly, which mainly includes: a push handle 1; a back cover 2; a seat 3; an armrest 4; a rear wheel 5; a front wheel 6; foot pedal 7; frame 8; seat board 9; hinge branch chain 10; fixed shell 11; deceleration motor 12; Rack chute 17; drive motor 19; backrest side cover 20; armrest slider 21; limit block 22.

As shown in Figures 1-4, the walking aid for the elderly mainly includes a frame, a front wheel, a rear wheel, a seat, a back cover, and a rack and pinion lifting mechanism.

The push handle 1 is connected with the seat 3 by welding.

Described backrest back cover 2 is connected with seat 3 by bolts, and drive motor 19 is installed in the backrest back cover 2 lowermost ends and is connected by bolts, and backrest side cover 20 is installed in backrest back cover 2 sides, and is connected by bolts.

Described frame 8 has connected pedal 7 and front wheel 6, is connected by hinge. Weld between frame 8 and seat 3.

The seat board 9 is connected with the seat 3 through the hinge chain 10, the seat 3 and the hinge chain 10 are connected by bolts, and the seat board 9 and the hinge chain 10 are hinged. The seat board 9 can be folded around the hinge branch 10 .

Described pedal 7 is hinged with frame 8. The hole on the pedal 7 passes the shaft on the frame 8, and the top is fixed with bolts to prevent axial loosening.

Described front-wheel 6 is hinged with frame 8, and the hole on the front-wheel 6 is connected with the axle on the frame 8, and the top is fixed with bolt, prevents axial loosening.

The fixed shell 11 is threadedly connected with the back cover 2, and the armrest slider 21 is placed inside the fixed shell 11, and the fixed shell 11 limits the armrest slider 21 to only slide up and down.

Described rack slideway 17 is installed on the back cover 2, is fixed by screw. The rack 18 is located on the rack chute 17 and slides along the rack chute 17 . The gear 15 meshes with the rack 18, and the gear 15 and the coupling 16 are connected by a flat key shaft; the coupling 16 is connected with the deceleration motor 12, and the deceleration motor 12 is located on the motor fixing frame 13, and the motor fixing frame 13 are welded on the back cover 2.

Described driving motor 19 is fixed on the frame 8, and the output shaft of driving motor 19 is connected with rear wheel 5, drives rear wheel to do periodical motion.

The push handle 1 can assist the user in pushing and exercising; the handrail 4 can assist the user in walking and exercising. There are two different ways of walking. When the user needs to rest, he can choose the electric wheelchair mode.

Referring to Fig. 6, the hinge branch chain 10 structure has a range of motion of 90°, and the limit effect in the horizontal direction ensures that the seat board 9 can only be folded vertically upwards, and the seat board 9 can be folded around the hinge branch chain 10. Provide enough space for walking and exercising.

Referring to Fig. 5, the pedal 7 is hinged with the frame 8 and fixed with fastening bolts to prevent axial loosening. Pedal 7 can be folded, provides enough space for the walker walking exercise.

The rack slideway 17 is fixedly installed on the back cover 2 by screws. The rack 18 slides vertically in the rack chute 17, and the rack chute 17 limits the rack 18 to only move vertically. The vertical movement of the rack 18 promotes the vertical movement of the handrail slider 21, thereby driving the handrail 4 to lift, and the structure is simple and easy to realize. Described motor fixing frame 13 is welded on the back cover 2, has fixed the laying position of reduction motor 12.

Referring to FIG. 8 , the armrest slider 21 can move vertically along the fixed shell 11 by 200mm, that is, the armrest 4 can be raised and lowered by 200mm, which is suitable for different human body heights.

Specifically, the walking aid equipment for the elderly provided in this embodiment includes a pusher 1, a seat 3, a rear wheel 5, a front wheel 6, and a frame 8, the frame 8 is fixedly connected to the seat 3, and the bottom of the frame 8 is connected to a pair of Front wheels 6 and a pair of rear wheels 5 make the assembly of frame 8, seat 3, front wheels 6 and rear wheels 5 have the outer contour of a wheelchair. The seat back of the seat 3 is fixedly connected with a push handle 1, so that the user can push the walking aid device for the elderly to move through the push handle 1.

The back cover 2 of the seat 3 is fixedly connected with a fixed shell 11, a motor fixing frame 13, and a vertically installed rack chute 17. An armrest slider 21 is installed inside the fixed shell 11, a rack 18 is installed inside the rack chute 17, and the rack 18 is fixedly connected with the armrest slider 21, so that the armrest slider 21 is driven by the rack 18 along the seat. Chair 3 backrests are displaced vertically. A reduction motor 12 is installed on the motor fixing frame 13, and the output shaft of the reduction motor 12 is connected to the gear shaft of the gear 15 through a shaft coupling 16, and the gear 15 is meshed with the rack 18, so that the reduction motor 12 drives the gear 15 The rotation drives the rack 18 to be displaced along the rack chute 17 in the rack chute 17 .

The handrail slider 21 is fixedly connected with the handrail 4, which is used to enable the user to lean on the walking aid equipment for the elderly in the electric wheelchair mode and the electric walking aid mode. Both the fixed shell 11 and the backrest side cover 20 of the seat 3 are provided with an open space on the lifting track of the armrest 4 for the user to adjust the height of the armrest 4 through the armrest slider 21 .

The seat plate 9 of the seat 3 is connected with the seat 3 through a hinge branch chain 10, and the hinge branch chain 10 is provided with a limit block 22 when the seat plate 9 moves to a horizontal position, which is used for when the user is in the electric wheelchair. When sitting in the seat 3 with a sitting posture under the mode, the seat plate 9 plays a supporting role.

The wheel fork of the front wheel 6 is hinged with the frame 8, and is used to change the direction of movement of the front wheel 6 with the force, thereby playing the role of a guide wheel.

The drive motor 19 is installed on the bottom of the frame 8, and the output end of the drive motor 19 is connected with the rear wheel 5; a 24V/10A lithium-ion battery is used as a power supply for powering electrical equipment such as the drive motor 19 and the reduction motor 12. It should be noted that the circuit connection relationship between the power supply and the electrical equipment and the control method are mature technologies that are easily available in the field of electric wheelchair technology. Those skilled in the art should understand that by adding electrical components such as switches and variable resistors to the circuit connection between the power supply and the motor, the purpose of driving the motor to drive the rear wheels to make the walking aid run can be realized; further, those skilled in the art can also Based on the prior art, by introducing control circuits such as single-chip microcomputers, combined with single-chip microcomputer programming and control elements, the control of the walking aid device of this patent is realized. Those skilled in the art should also understand that the above-mentioned circuit connection relationship and control method do not belong to the content involved in the technical problem to be solved by this patent, so this patent will not repeat them any further.

In order to save the overall space of the equipment, the lithium-ion battery is placed inside the back cover 2 of the backrest. Of course, for the convenience of replacing the lithium-ion battery, etc., the lithium-ion battery can also be installed outside the back cover 2 of the seat 3 .

The lower part of the frame 8 is also hinged with the footboard 7, which is used to allow the user to remove the footboard 7 from the front of the walking aid for the elderly when entering the equipment, to facilitate entry, and to enable the user to enter the equipment. Afterwards, the pedal 7 is moved into the front part of the walking aid equipment for the elderly to support the user's feet.

The seat board 9 includes a pair of oppositely opened supporting boards, and the two seat boards 9 are respectively hinged to the side of the seat 3 through two hinge chains 11 .

The hinge of described pedal 7 and frame 8 is the hinge of vertical direction, is used to make pedal 7 can rotate horizontally along the axis of rotation on the frame; The hinge of described front wheel 6 and frame 8 is vertical The hinge in the vertical direction is used to make the front wheel 6 horizontally rotate along the axis of rotation on the frame

Installation steps of the present utility model:

1) The frame and the seat are welded together.

2) The push handle is welded on the seat.

3) Install the front wheel, rear wheel and drive motor.

4) Fasten the rack chute on the back cover of the backrest with screws, install the rack, the gear meshes with the rack, connect the gear with the coupling through the flat key shaft, and then connect it with the geared motor.

5) Install the armrest, and fasten the fixed shell on the back cover of the backrest with bolts.

6) Install the backrest lower cover and the backrest back cover with bolts, and then connect the backrest side cover with the backrest back cover with bolts.

7) Install the whole body connected with the back cover on the seat through threaded connection.

8) Fix the hinge branch chain on the seat with screws, and then install the seat board.

9) Install the pedals and fix them with bolts.

The working process of the present utility model is as follows:

As shown in FIG. 9 , the user holds the pusher and pushes the walking aid device to assist in walking exercise.

As shown in Figure 10, the user folds up the seat board with his hands, raises the armrest to a suitable position, and the user assists in walking exercises in the electric walking assistance mode.

As shown in Figure 11, the user sits on the walking aid, puts his feet on the pedals, and puts his arms on the armrests, which is equivalent to an electric wheelchair. It can assist rest and walking.

The above content is a further detailed description of the utility model in combination with specific preferred embodiments, and it cannot be assumed that the specific implementation of the utility model is only limited to these descriptions. For a person of ordinary skill in the technical field to which the utility model belongs, without departing from the concept of the utility model, some simple deduction or substitutions can also be made, which should be regarded as belonging to the protection scope of the utility model.

Claims (9)

1. A walking aid for the elderly, comprising a push handle (1), a seat (3), a rear wheel (5), a front wheel (6), and a frame (8), characterized in that: The frame (8) is fixedly connected to the seat (3), and the bottom of the frame (8) is connected to a pair of front wheels (6) and a pair of rear wheels (5), so that the frame (8), the seat (3) , the assembly of the front wheel (6) and the rear wheel (5) has the outer contour of a wheelchair; the seat (3) is fixedly connected with a push handle (1) on the back of the seat, so that the user can pass the push handle (1) ) to promote the movement of mobility aids for the elderly; The back cover (2) of the seat (3) is fixedly connected with the fixed shell (11), the motor fixing frame (13), and the vertically installed rack chute (17); the fixed shell (11) The handrail slider (21) is installed inside, and the rack (18) is installed inside the rack chute (17). The rack (18) is fixedly connected with the handrail slider (21), and is used to make the Driven by the bar (18), the vertical displacement occurs along the backrest of the seat (3); the geared motor (12) is installed on the motor fixing frame (13), and the output shaft of the geared motor (12) passes through the coupling ( 16) The gear shaft connecting the gear (15), the gear (15) is meshed with the rack (18), used to make the gear motor (12) drive the gear (15) to rotate, and drive the rack (18) on the rack The chute (17) is displaced along the rack chute (17); the armrest slider (21) is fixedly connected to the armrest (4), which is used to enable the user to lean on in the electric wheelchair mode and the electric walking aid mode Walking aid for the elderly; the fixed shell (11) and the backrest side cover (20) of the seat (3) are all provided with an open space on the lifting track of the armrest (4), which is used to allow the user to pass through the armrest slider (21 ) to adjust the height of the armrest (4); The seat (9) of the seat (3) is connected to the seat (3) through a hinged chain (10), and the hinged chain (10) is provided with a limit when the seat (9) moves to a horizontal position. The block (22) is used for supporting the seat plate (9) when the user sits in the seat (3) in a sitting posture in the electric wheelchair mode; The fork of the front wheel (6) is hinged to the frame (8), which is used to change the direction of movement of the front wheel (6) according to the force, so as to play the role of a guide wheel; The drive motor (19) is installed on the bottom of the frame (8), and the output end of the drive motor (19) is connected to the rear wheel (5); the battery is installed on the back cover (2), and the battery is respectively connected to the gear motor ( 12), and the drive motor (19) are connected to provide power for the geared motor (12) and the drive motor (19); The lower part of the frame (8) is also hinged with the footboard (7), which is used to allow the user to remove the footboard (7) from the front of the walking aid for the elderly when entering the equipment, so as to facilitate entry, and is used for After the user enters the device, the foot pedal (7) is moved into the front part of the walking aid device for the elderly to support the user's feet. 2. A walking aid device for the elderly according to claim 1, characterized in that: the seat board (9) includes a pair of support boards opened towards each other, and the two seat boards (9) are respectively connected by two hinges (10) is hinged with the side of the seat (3). 3. A walking aid for the elderly according to claim 1, characterized in that: the hinge of the pedal (7) and the frame (8) is a vertical hinge, which is used to make the pedal ( 7) It can rotate horizontally along the rotation axis on the frame; the hinge between the front wheel (6) and the frame (8) is a vertical hinge, which is used to make the front wheel (6) rotate along the frame The axis rotates horizontally. 4. A walking aid for the elderly according to claim 1, characterized in that: the push handle (1) is connected to the seat (3) by welding; The backrest back cover (2) is connected with the seat (3) by bolts, the driving motor (19) is installed on the bottom end of the backrest back cover (2) and connected by bolts, and the backrest side cover (20) is installed on the backrest back cover ( 2) Side, connected by bolts; The frame (8) is connected with the pedals (7) and the front wheels (6), and connected by hinges; the frame (8) is welded to the seat (3); The seat board (9) is connected with the seat (3) through the hinge chain (10), the seat (3) and the hinge chain (10) are connected by bolts, and the seat board (9) and the hinge chain (10) are hinged; the seat plate (9) can be folded around the hinge branch chain (10); The pedal (7) is hinged with the frame (8); the hole on the pedal (7) passes through the shaft on the frame (8), and the top is fixed with bolts to prevent axial loosening; The front wheel (6) is hinged to the frame (8), the hole on the front wheel (6) is connected to the shaft on the frame (8), and the top is fixed with bolts to prevent axial loosening; The fixed shell (11) is threadedly connected to the back cover (2), the armrest slider (21) is placed inside the fixed shell (11), and the fixed shell (11) restricts the armrest slider (21) to only go up and down slide; The rack chute (17) is installed on the back cover (2) and fixed by screws; the rack (18) is located on the rack chute (17) and slides along the rack chute (17); The gear (15) meshes with the rack (18), and the gear (15) and the coupling (16) are connected through a flat key shaft; the coupling (16) is connected with the geared motor (12), and the gear The motor (12) is located on the motor fixing frame (13), and the motor fixing frame (13) is welded on the back cover (2); The drive motor (19) is fixed on the frame (8), and the output shaft of the drive motor (19) is connected with the rear wheel (5) to drive the rear wheel to perform periodic motion. 5. A walking aid device for the elderly according to claim 1, characterized in that: the push handle (1) can assist the user in walking exercise; the handrail (4) can assist the user in electric walking exercise; there are two There are different ways of walking; when the user needs to rest, he can choose the electric wheelchair mode. 6. A walking aid for the elderly according to claim 1, characterized in that: the hinge branch (10) structure has a range of motion of 90°, and the limit function in the horizontal direction ensures that the seat (9) only It can be folded vertically upwards, and the seat board (9) can be folded around the hinge branch chain (10) to provide enough space for the exercise of the electric walking aid. 7. A walking aid for the elderly according to claim 1, characterized in that: the pedal (7) is hinged to the frame (8) and fixed with fastening bolts to prevent axial loosening; the pedal The board (7) can be folded to provide enough space for the exercise of the electric walking aid. 8. A walking aid for the elderly according to claim 1, characterized in that: the rack chute (17) is fixed on the back cover (2) by screws; the rack (18) is The rack chute (17) slides vertically, and the rack chute (17) restricts the rack (18) to only move vertically; The vertical movement of the rack (18) pushes the handrail slider (21) to move vertically, thereby driving the handrail (4) up and down, and the structure is simple and easy to realize; The motor fixing frame (13) is welded on the back cover (2) to fix the placement position of the reduction motor (12). 9. A walking aid for the elderly according to claim 1, characterized in that: the armrest slider (21) can move 200mm vertically along the fixed shell (11), that is, the armrest (4) can be lifted up and down by 200mm, Suitable for different human body heights.