CN106510986A - Multifunctional nursing electric wheelchair - Google Patents

Abstract

A multi-functional nursing electric wheelchair provided by the present invention comprises a body, the body includes a seat, seat armrests are provided on the left and right sides of the seat, a leg lifter is provided at the front end, and a lifter is provided at the rear end. Back support board; the lower part of the body is provided with a bracket, and the bracket is provided with a steering front wheel and a driving rear wheel; the bracket is also provided with a single motor, and the single motor is connected with a flat control mechanism, so The lying down control mechanism includes a first control mechanism for controlling the raising and lowering of the leg raising board and a second control mechanism for controlling the raising and lowering of the back raising board. The invention raises the leg-lifting auxiliary board through the first control mechanism, and lowers the back-raising auxiliary board through the second control mechanism at the same time, so that the wheelchair forms a reclining chair state, which is convenient for nursing the user.

Description

A multifunctional nursing electric wheelchair

technical field

The invention relates to a novel multifunctional intelligent electric wheelchair.

Background technique

As the trend of aging in our country is increasing, the means of transportation for many elderly and disabled people has become a problem, but the current electric wheelchair solves this problem very well. Electric wheelchairs currently on the market can be divided into ordinary wheelchairs and multifunctional wheelchairs by type. The multifunctional electric wheelchair has relatively complete functions. It is not only used as a mobility tool for the disabled and people with reduced mobility, but also has other functions. For multifunctional wheelchairs, it has become the focus of researchers to study an electric wheelchair that adapts to the elderly and can provide nursing functions.

In China, the research on multifunctional wheelchairs is not very perfect, but it has been improved on a certain basis. For example, some domestic manufacturers have invented a series connection design of the left and right motors that drive the left and right power rear wheels in the research of the original wheelchair, so that it has a differential speed function, making the wheelchair stable and comfortable when driving, and the steering is reliable. Some scientific research institutions in my country have also started related research work, but there are still no products applied to real life. Generally speaking, the technology of multifunctional wheelchairs in our country is not very mature, and there is still a lot of room for development.

Contents of the invention

The purpose of the present invention is to provide a multifunctional nursing electric wheelchair, which solves the defects of the existing multifunctional wheelchairs such as inconvenience in nursing.

In order to achieve the above object, the technical scheme adopted in the present invention is specifically as follows:

A multi-functional nursing electric wheelchair provided by the present invention comprises a body, the body includes a seat, seat armrests are provided on the left and right sides of the seat, a leg lifter is provided at the front end, and a lifter is provided at the rear end. Back support board; the bottom of the body is provided with a bracket, and the bracket is provided with a steering front wheel and a driving rear wheel; the bracket is also provided with a single motor, and the single motor is connected with a flat control mechanism. The lying down control mechanism includes a first control mechanism for controlling the raising and lowering of the leg raising board and a second control mechanism for controlling the raising and lowering of the back raising board.

Preferably, the first control mechanism includes a first cam connected to the first output shaft provided on the single motor, the first cam is provided with a first connecting rod, and the first connecting rod is hinged to a second A connecting rod head, the first connecting rod head is provided with a first gear; the lower surface of the seat near the side of the leg lifter is provided with a first chute, and the first chute is fitted with a A first slider, the first slider is provided with a first rack, and the first rack meshes with the first gear.

Preferably, the second control mechanism includes a second cam connected to the second output shaft provided on the single motor, the second cam is provided with a second connecting rod, and the second connecting rod is hinged to a second Two link heads, the second link head is provided with a second gear; the seat is provided with a second chute on the lower surface of the side close to the back-lifting auxiliary board, and the second chute is equipped with a The second slider, the second slider is provided with a second rack, and the second rack is meshed with the second gear; the center of the lower end of the back lifter is provided with a support plate, and the support The plate is welded to the second slider.

Preferably, the single motor is connected with a lift control mechanism for controlling the rise and fall of the seat, and the lift control mechanism includes a fourth cam connected with a fourth output shaft provided on the single motor, and the fourth cam A fourth connecting rod is provided, and a fourth connecting rod head is hinged on the fourth connecting rod, and a third gear is arranged on the fourth connecting rod head; a lifting shaft is fixedly connected to the center of the lower surface of the seat, The lifting shaft is provided with a second card slot, and a pin block is fixed in the second card slot, and a third rack is arranged on the pin block; the third rack meshes with the third gear.

Preferably, the single motor is connected with a turning control mechanism for controlling the left and right turning of the seat, and the turning control mechanism includes a fifth cam connected with a fifth output shaft provided on the single motor, and the fifth cam is provided with There is a fifth connecting rod, on which a fifth connecting rod head is hinged, and a fourth gear is arranged on the fifth connecting rod head; a third chute is arranged on the left lower surface of the base , the third slide slot is fitted with a third slide block, the third slide block is provided with a fourth rack, and the fourth rack is meshed with the fourth gear.

Preferably, the steered front wheels include a left steered front wheel and a right steered front wheel, and the two are connected by a follow-up steering shaft, and the follow-up steering shaft is provided with a switch for controlling the steered front wheels to turn left or right. Steering control mechanism, the steering control mechanism includes a third cam connected to the third output shaft provided on the single motor, the third cam is provided with a third connecting rod, and the third connecting rod is hinged with a third Three connecting rod heads, the third connecting rod head is fixed on the first slot provided on the follow-up steering shaft through pins.

Preferably, the driving rear wheel includes a left driving rear wheel and a right driving rear wheel, and the two are connected through a rear wheel driving shaft, and the rear wheel driving shaft is connected to the sixth output shaft provided on the single motor.

Preferably, the seat is connected to the leg-raising board through hinges; and is connected to the back-raising board through hinges.

Preferably, the body is also provided with a controller, the controller is connected with a single motor, and at the same time, the controller is provided with forward, backward, left turn, right turn, left turn, right turn, rise, fall , buttons for leg lift, leg release, back lift and back release.

Compared with prior art, the beneficial effect of the present invention is:

A multi-functional nursing electric wheelchair provided by the present invention comprises a body, the body includes a seat, seat armrests are provided on the left and right sides of the seat, a leg lifter is provided at the front end, and a lifter is provided at the rear end. Back support board; the bottom of the body is provided with a bracket, and the bracket is provided with a steering front wheel and a driving rear wheel; the bracket is also provided with a single motor, and the single motor is connected with a flat control mechanism. The lying down control mechanism includes a first control mechanism for controlling the raising and lowering of the leg raising board and a second control mechanism for controlling the raising and lowering of the back raising board. The invention raises the leg-lifting auxiliary board through the first control mechanism, and lowers the back-raising auxiliary board through the second control mechanism at the same time, so that the wheelchair forms a reclining chair state, which is convenient for nursing the user.

Furthermore, the lifting control mechanism at the bottom of the wheelchair allows the user to freely adjust within a certain height range, which is convenient for the user to stretch the legs.

Further, the turning control mechanism on the wheelchair can enable the user to turn left and right.

Furthermore, the driving mode of the wheelchair is the rear wheel, and the steering device is placed on the front wheel, which has a certain ability to avoid obstacles.

Description of drawings

Fig. 1 is a schematic view of the structure of the wheelchair;

Fig. 2 is a schematic structural diagram of the first control mechanism of the leg lifter;

Fig. 3 is a structural schematic diagram of the steering control mechanism for steering the front wheels;

Fig. 4 is a structural schematic diagram of the lifting control mechanism of the seat;

Fig. 5 is a structural schematic diagram of the flip control mechanism of the seat.

Among them, 1. Turning to the front wheel 2. Driving the rear wheel 3. Back lifter 4. Back chair armrest 5. Seat armrest 6. Small table 7. Controller 8. Seat 9. Leg lifter 10. Single motor 11. First cam 12, bracket 13, first connecting rod 14, slider 15, telescopic shaft 16, third cam 17, third connecting rod 18, follow-up steering shaft 19, fourth cam 20, fourth connecting rod 21, lifting shaft 22, the fifth cam 23, the fifth connecting rod 24, the rear wheel drive shaft.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Fig. 1, a kind of novel intelligentized multifunctional nursing electric wheelchair provided by the present invention comprises a body, including a seat 8, the left and right sides of the seat 8 are welded with seat armrests 5, the right side The seat armrest 5 is provided with a controller 7, which is connected by a set screw between the controller 7 and the seat armrest 5; The plates 3 are connected by hinges, and the back-lifting auxiliary board 3 is provided with a back chair armrest 4, and the back chair armrest 4 and the back-raising auxiliary board 3 are connected by bolts; the front end of the seat 8 is provided with a leg-raising auxiliary board. Plate 9 adopts hinged connection between leg-lifting auxiliary board 9 and seat 8.

The seat armrest 5 is a square structure, and a small table is arranged in the square, and the small table is connected with the seat armrest 5 by a hinge. The left small table board and the right small table board are lifted and merged together to form the small table 6.

A bracket 12 is arranged below the seat 8, and it is supported by the bracket 12. The support 12 is provided with traveling wheels, and the traveling wheels include left and right turning 1 front wheels and left and right driving rear wheels 2, wherein the left and right turning front wheels are connected by a follow-up steering shaft 18, and the left and right driving rear wheels Connected by the rear wheel drive shaft 24. Meanwhile, the bracket 12 is a closed structure, and a cavity is opened inside it. A single motor is arranged in the cavity, and the single motor is provided with six drive output shafts, which are respectively the first output shaft, the second output shaft, the third output shaft, the fourth output shaft, the fifth output shaft and A sixth output shaft, while the six drive output shafts are independent of each other.

The controller is connected with each output shaft on the single motor 10 to control functions such as rotation speed, forward and reverse rotation of each output shaft. The controller includes buttons for forward, backward, left turn, right turn, left turn, right turn, up, down, leg lift, leg release, back lift, etc.

As shown in Figure 2, the body is provided with a first control mechanism for controlling the rise and fall of the leg lift board 9, and the first control mechanism is arranged on the left side of the cavity on the bracket 12, including a fixed The first cam 11 on the bracket 12, the first cam 11 is provided with a first connecting rod 13, the first connecting rod 13 is hinged with a first connecting rod head, and the first connecting rod head is provided with There is first gear. A first chute is provided on the lower surface of the seat 8 near one end of the leg lifter 9 , and a first slide block is mounted in the first chute. The first slider is a stepped shaft, including a first stepped shaft 14 and a second stepped shaft 15 , and the shaft diameters of the first stepped shaft 14 and the second stepped shaft 15 decrease successively. A first rack is provided on the outer surface of the first stepped shaft 14, and the first rack is engaged with the first gear on the first connecting rod head.

The driving of the first control mechanism is realized by driving the first cam 11 through the first output shaft on the single motor 10 . Specifically, the single motor 10 drives the first cam 11 to rotate through the first output shaft, and the first cam 11 drives the first connecting rod 13 to move forward and backward linearly. The first connecting rod 13 drives the first connecting rod head to mesh with the first stepped shaft 14, and then drives the first slider to move forward and backward in a straight line. When the first cam 11 rotated positively, the first slider moved forward, and at this moment, the second step shaft 15 on the first slider stretched to the bottom of the leg-lifting auxiliary board 9, and the leg-raising auxiliary board 9 was jacked up, Make the leg-lifting board 9 and the seat 8 be in the same horizontal plane; when the first cam 11 reversed, the first slider moved backwards, and now the leg-raising board 9 dropped to the original state because of losing its upward supporting force.

The body is provided with a second control mechanism for controlling the raising and lowering of the back-lifting auxiliary board 3, the second control mechanism is arranged in the cavity on the bracket 12, and includes a second cam fixed on the bracket 12, A second connecting rod is arranged on the second cam, a second connecting rod head is hinged on the second connecting rod, and a second gear is arranged on the second connecting rod head. A second chute is provided on the lower surface of one end of the seat 8 close to the back-lifting auxiliary board 3 , and a second sliding block is fixed in the second chute. The second slider is a stepped shaft, including a third stepped shaft and a fourth stepped shaft, and the shaft diameters of the third stepped shaft and the fourth stepped shaft decrease successively. A second rack is provided on the outer surface of the third stepped shaft, and the second rack meshes with the second gear on the second connecting rod head. At the same time, a support plate is provided at the center of the lower end of the back-lifting auxiliary plate 3, and the support plate is welded to the fourth step shaft.

The drive of the second control mechanism is realized by the second output shaft on the single motor 10 driving the second cam, and its principle is the same as that of the first control mechanism, which is omitted here.

Through the first control mechanism and the second control mechanism, the main body can be adjusted into a reclining chair state for people to rest.

As shown in Figure 3, the body is provided with a steering control mechanism for controlling the left and right steering front wheels 1 to turn left or right, and the steering control mechanism is arranged in the cavity on the bracket 12, including The third output shaft on the motor 10 drives the connected third cam 16, the third cam 16 is provided with a third connecting rod 17, and the third connecting rod 17 is hinged with a third connecting rod head.

The left and right steering front wheels are connected by a follow-up steering shaft 18, the follow-up steering shaft 18 is provided with a first draw-in slot, and the third link head is fixed on the first draw-in slot by a pin. Now the rotational motion of the third cam 16 is converted into the left and right swing of the follower steering shaft 18 by the third connecting rod 17, and then drives the left and right steering front wheels 1 to swing left and right, realizing the left and right steering of the front wheels 1. When the central axis of the left wheel of the steering front wheel 1 connected with the follow-up steering shaft 18 was close to the central axis of the second cam 16, turn left; When the axis is close to the central axis of the second cam 16, the right turn is realized.

As shown in Figure 4, the body is provided with a lifting control mechanism for controlling the rise and fall of the seat 8. The fourth cam 19 connected by the shaft, the fourth cam 19 is connected with the fourth connecting rod 20, the fourth connecting rod 20 is hinged with the fourth connecting rod head, and the fourth connecting rod head is provided with third gear. The center of the lower surface of the seat 8 is fixedly connected with a lift shaft 21, the lift shaft 21 is provided with a second slot, the second slot is provided with a pin block, and the pin block is provided with a first Three racks, the third rack meshes with the third gear.

The single motor 10 drives the fourth cam 19 to rotate, and then converts the rotational motion of the fourth cam 19 into the linear motion of the pin block through the fourth connecting rod 20, thereby realizing the rising and falling of the lifting shaft 21. When the fourth cam 19 rotated positively, the lifting shaft 21 lifted the seat 8 up to realize the rise of the seat 8;

As shown in Figure 5, the body is provided with an overturning control mechanism that controls the seat 8 to turn left and right (taking the left side as an example, the principle of right side overturning is the same), and the described overturning control mechanism includes The fifth cam 22 connected to the fifth output shaft on the motor 10, the fifth cam 22 is connected with the fifth connecting rod 23, the fifth connecting rod 23 is hinged with the fifth connecting rod head, the fifth A fourth gear is arranged on the connecting rod head. The left side lower surface of described seat 8 is provided with the 3rd chute, is provided with the 3rd sliding block in the described 3rd chute, is provided with the 4th tooth rack on the described 4th sliding block, and the 4th The rack meshes with the fourth gear.

The single motor 10 drives the fifth cam 22 to rotate, and the rotation of the fifth cam 22 is converted into the left and right sliding of the fifth connecting rod head through the fifth connecting rod 23 . Furthermore, the left and right heights of the fourth chute platform are different, which affects the balance of the seat 8 and realizes the left and right turning of the seat 8 . When the fifth cam 22 rotates in the forward direction, the fifth connecting rod 23 slides to the right, raising the height on the left side of the fourth chute, so that the seat 8 is flipped to the right; when the fifth cam 22 rotates in the opposite direction, the fifth connecting rod 23 slides to the left, raises the height on the right side of the fourth chute, and realizes that the seat 8 turns to the left.

The body is also provided with a rear-wheel drive control system for controlling the rear-wheel drive, and the rear-wheel drive control system includes a rear-wheel drive shaft 24 connected to the sixth output shaft on the single motor 10, and the rear-wheel drive Axle 24 is used for connecting left and right rear wheels. The rotation of the sixth output shaft of the single motor 10 drives the rotation of the rear wheel drive shaft 24, and then drives the rotation of the rear wheel.

Claims (9)

1. A multifunctional nursing electric wheelchair is characterized in that: it comprises a body, the body comprises a seat (8), the left and right sides of the seat (8) are provided with seat armrests (5), and its front end is provided with There is a leg-lifting auxiliary board (9), and the rear end is provided with a back-raising auxiliary board (3); a bracket (12) is arranged below the body, and a steering front wheel (1) and a driving wheel (1) are arranged on the bracket (12). rear wheel (2); the support (12) is also provided with a single motor (10), the single motor (10) is connected with a lying control mechanism, and the lying control mechanism includes a A first control mechanism for raising and lowering the board (9) and a second control mechanism for controlling the raising and lowering of the back-lifting auxiliary board (3). 2. A multifunctional nursing electric wheelchair according to claim 1, characterized in that: said first control mechanism comprises a first cam (11) connected to a first output shaft provided on a single motor (10) , the first cam (11) is provided with a first connecting rod (13), the first connecting rod (13) is hinged with a first connecting rod head, and the first connecting rod head is provided with a first gear; the seat (8) is provided with a first chute on the lower surface near the side of the leg lifter (9), and a first slider is installed in the first chute, and the first slider A first rack is arranged on the top, and the first rack is meshed with the first gear. 3. A kind of multifunctional nursing electric wheelchair according to claim 2, characterized in that: the second control mechanism includes a second cam connected to the second output shaft provided on the single motor (10), the The second cam is provided with a second connecting rod, the second connecting rod is hinged with a second connecting rod head, and the second connecting rod head is provided with a second gear; the seat (8) is close to the backrest A second chute is provided on the lower surface of one side of the auxiliary board (3), and a second slider is mounted in the second chute, and a second rack is arranged on the second slider. The rack meshes with the second gear; a support plate is arranged at the center of the lower end of the back-lifting auxiliary plate (3), and the support plate is welded and connected with the second slider. 4. A multifunctional nursing electric wheelchair according to claim 1, characterized in that: the single motor is connected with a lift control mechanism for controlling the rise and fall of the seat (8), and the lift control mechanism includes a The fourth cam (19) connected to the fourth output shaft provided on the motor, the fourth cam (19) is provided with the fourth connecting rod, the fourth connecting rod is hinged with the fourth connecting rod head, so The fourth connecting rod head is provided with a third gear; the center of the lower surface of the seat (8) is fixedly connected with a lifting shaft (21), and the lifting shaft (21) is provided with a second card slot. A pin block is fixed in the second slot, and a third rack is arranged on the pin block; the third rack is meshed with the third gear. 5. A multifunctional nursing electric wheelchair according to claim 1, characterized in that: the single motor (10) is connected with a turning control mechanism for controlling the left and right turning of the seat (8), and the turning control mechanism includes The fifth cam (22) connected with the fifth output shaft provided on the single motor (10), the fifth cam (22) is provided with the fifth connecting rod (23), the fifth connecting rod (23 ) is hinged with a fifth connecting rod head, the fifth connecting rod head is provided with a fourth gear; the left lower surface of the base (8) is provided with a third chute, and the third chute is equipped with A third slider is stuck, and a fourth rack is arranged on the third slider, and the fourth rack is meshed with the fourth gear. 6. A multi-functional nursing electric wheelchair according to claim 1, characterized in that: said steering front wheel (1) includes a left steering front wheel and a right steering front wheel, and there is a follow-up steering shaft between the two (18) is connected, and the steering control mechanism for controlling the steering front wheel (1) to turn left and right is provided on the follow-up steering shaft (18), and the steering control mechanism includes a single motor (10) that is provided with The third cam (16) connected to the third output shaft, the third cam (16) is provided with a third connecting rod (17), and the third connecting rod (17) is hinged with a third connecting rod head, The third connecting rod head is fixed on the first slot provided on the follower steering shaft (18) by a pin. 7. A kind of multifunctional nursing electric wheelchair according to claim 1, characterized in that: said driving rear wheel comprises a left driving rear wheel and a right driving rear wheel, and the rear wheel drive shaft (24) is passed between the two connected, the rear wheel drive shaft (24) is connected with the sixth output shaft provided on the single motor (10). 8. A multi-functional nursing electric wheelchair according to claim 1, characterized in that: the seat (8) is hingedly connected to the leg lifter (9) and hinged to the back lifter (3) connect. 9. A kind of multifunctional nursing electric wheelchair according to any one of claims 1-8, characterized in that: the body is also provided with a controller (7), and the controller (7) is connected to the single motor ( 10) Connecting, at the same time, the controller (7) is provided with forward, backward, left-turn, right-turn, left-turn, right-turn, rise, fall, leg-lifting, leg-putting, back-lifting and back-putting buttons.