RU2445057C1 - Diversified transport means for disabled people - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, namely to transport means for independent movement of disabled people. Diversified transport means for disabled people contains installed on wheels frame, made from longitudinal horizontal and inclined tubes and bearing a seat, and protected by casing drive chain mechanism with cranks, connected with back wheels. And device includes the following mechanisms: lifting-descending of transport means; spreading-contraction of chassis base; rotation of transport means around axis of swivel support plate, as well as upset and rise of seat back.

EFFECT: increase of maneuverability of transport means and improvement of exploitation characteristics in application of device in water closets, as well as optimisation of minimal weight, reduction construction price, simplification of control, increase of reliability in exploitation process.

3 dwg

Description

The invention relates to medical equipment, namely to vehicles for the independent movement of persons with disabilities.

Known sports rehabilitation vehicle with a manual separate wheel drive. This device contains a frame mounted on wheels made of horizontal and inclined pipes. And also it is equipped with a chain drive with cranks connected to the rear wheels with the possibility of rotation in the longitudinal vertical plane and securing it in split heads. The cranks can be mounted handles or pedals (see patent RU No. 2022545; A61G 5/02; B62M 1/12; 1994 - prototype).

The disadvantages of the prototype are as follows.

1. The inability to enter the elevator, because the base of the trolley is wider than 60 cm. And the doorways of elevator doors in residential buildings are a maximum of 60 cm and a minimum of 50 cm.

2. Low maneuverability of the device. The floor area of the elevator car does not allow this wheelchair to turn 180 °.

3. In the toilet there are regular inserts in the toilets, but mechanisms for tipping the back of the chair and returning it to its original position have not been developed enough.

The objective of the invention is to increase the maneuverability of the vehicle and improve performance when using the device in the bathrooms, optimizing the minimum weight, reducing the cost of construction, simplifying control, increasing reliability during operation.

To solve this problem, a multidisciplinary vehicle for the disabled is proposed, containing a frame mounted on wheels, made of longitudinal horizontal and inclined pipes and a bearing seat, as well as a drive chain mechanism protected by a casing with cranks connected to the rear wheels. Moreover, the device includes the following mechanisms: raising and lowering the vehicle; extension-narrowing of the chassis base; rotation of the vehicle around the axis of the swivel support plate, as well as tipping and lifting the back of the chair.

To explain the invention proposed drawings. Figure 1 presents: the mechanism of raising and lowering the trolley and the mechanism of rotation of the vehicle around the axis of the rotary support plate. Figure 2 - the mechanism of the extension-narrowing of the base chassis. Figure 3 - the mechanism of lifting and tilting the back of the chair.

The mechanism for raising and lowering the trolley includes the following details (see figure 1):

1. bevel spur gears;

2. gear housing;

3. spur gears;

4. drive handle;

5. running screw;

6. expanding cup;

7. bronze nut;

8. screw fixing nut 7;

9. traction;

10. movable telescopic tube;

11. a glass with a longitudinal slit;

12. bolts connecting the glass to the frame;

13. saddle;

14. centering pin;

15. trolley frame.

The mechanism of rotation of the trolley around the axis of the rotary disk includes (see figure 1):

16. thrust bearing;

17. swivel support plate;

18. hairpin;

19. nut;

20. rubber ring.

The mechanism of the extension-narrowing of the chassis base includes (see figure 2):

21. fork;

22. drive;

23. telescopic tube;

24. drive axis;

25. wheel rim;

26. guide needles;

27. tightening studs;

28. spring;

29. spring guide bush;

30. drive gear.

The mechanism for lifting and tilting the back of the chair includes (see figure 3):

31. boom drive transmission trolleys;

32. chain drive handle;

33. a small gear wheel;

34. chain;

35. a large gear wheel;

36. shaft;

37. drum;

38. cable; ''

39.40. bypass wheels;

41. cable fastening roller;

42. back of a chair;

43. control lever for raising and lowering the chair;

44. regular chair;

45. backrest lift limiter;

46. handle stop 32;

47. axis of rotation of the back of the chair;

48. safety wheels.

The vehicle operates as follows.

On a standard height-adjustable chair with a back, a disabled person moves along the highway (around the apartment) with a given chassis base, providing lateral stability of the vehicle.

On a vehicle, a disabled person in front of the elevator doors, using the mechanism for raising and lowering the trolley (Fig. 1), hangs the vehicle on a rotary support plate 17, connected with the frame 15, to the height of separation of the wheels from the floor.

Next, the mechanism of the expansion-narrowing of the base of the chassis (figure 2), the wheels move closer to the width of the elevator doors (- 4 cm - clearance).

After that, the vehicle lowers completely to the floor with the wheels, the rotary support plate 17 is pressed against the frame 15, and the disabled person drives into the elevator car.

In the cabin, a disabled person hangs a vehicle on a rotary support plate 17, using the mechanism of rotation of the vehicle around the vertical axis of the rotary support plate (Fig. 1) and rotates 180 °.

Faced with a door, the disabled person lowers the device with the wheels to the floor and stops from the cab, then hangs it on the rotary support plate 17, spreads the wheels, and the vehicle is ready to move along the highway (apartment).

When using a toilet bowl with a standard insert, a disabled person with a mechanism for lifting and tipping the back of a chair (Fig. 3) tilts the back of the chair and, adjusting the height of the chair (standard with the standard mechanism for raising and lowering), combines the height of the chair with the toilet insert. Then he moves away from the toilet and brings the chair to its original position for movement around the apartment.

The mechanism of raising and lowering the trolley is as follows.

When the handle 4 is rotated, the torque is transmitted through a cylindrical pair 3 of a conical pair of gears 1 and a worm pair (a running screw 5 and a bronze nut 7), moving the nut 7, which moves progressively up or down the slit - cuts in the cup 11, moving the telescopic tube 10 A telescopic tube 10 is connected to an expansion cup 6, height-adjustable on the pipe 10.

The glass 6 through two rods 9 is connected to the saddle 13, the latter relative to the frame of the trolley 15, hangs it with the aim of turning the trolley around the centering pin 14 and changing the wheel base.

With the reverse rotation of the handle, the trolley becomes on the chassis, and the rotary support plate 17 rises from the floor and is pressed against the frame 15.

The mechanism of expansion and narrowing of the chassis base works as follows.

By rotating the handle through a flexible shaft, the torque is transmitted to the standard jack (universal mechanical rhombus), the latter moves the fork 21 (Fig. 2) of the mechanism for expanding and narrowing the chassis base. The fork 21 moves the disk 22. The disk 22 crawls along the telescopic pipe 23, which, in turn, moves along the axis of the drive 24 of the wheel 25.

The mechanism of rotation of the trolley around the axis of the rotary support plate (see figure 1) works as follows.

The pivoting support plate 17 by means of a thrust bearing 16 allows the saddle 13 and the entire vehicle to rotate freely together with the disabled person, which is repelled from the elevator wall.

The swivel seat 13 and the swivel support plate 17 are connected through the bearing 16 with a pin 18. The swivel support plate is fixed with a nut 19.

In order not to scratch the floor surface, a rubber ring 20 is mounted in a rotary support plate around the circumference.

The mechanism of lifting-tipping the back of the chair (see figure 3) works as follows.

The backrest 42 of the chair 44 is lifted by rotating the chain transmission handle 32 mounted on the boom 31 of the drive transmission. Through the shaft 36 connecting the large gear wheel 35 to the drum 37, the cable 38 is wound on the drum 37, passing a loop through the bypass wheels 39 and 40. The end of the cable is fixed to the roller 41 connected to the back 42.

When winding the cable onto the drum, the backrest rises to a vertical position until it stops 45 and is fixed by the stopper 46 of the handle 32.

Lowering the backrest occurs under its own weight when opening the stopper 46. The loop-shaped contour of the cable provides self-braking and eliminates the impact of the backrest in the lower position.

When moving a disabled person from a chair to a toilet, the centering of the apparatus is forced to change. If the center of gravity goes beyond the area of the support rotary disk, the displacement of the center of gravity is compensated by a safety pair of movable wheels 48 mounted on the back of the support disk, providing longitudinal stability to the apparatus.

Thus, the technical result is an increase in the maneuverability of the vehicle, the possibility of entering the elevator and turning the device in the elevator by 180, adjusting the chassis base, improving the operating characteristics when using the device in bathrooms, and the technical result is optimizing the minimum weight, simplicity of design, and cheapening it , ease of management and reliability during operation.

The vehicle is made in metal and has been tested at Novgorod State University named after Yaroslav the Wise.

Claims (1)

A multidisciplinary vehicle for the disabled, containing a frame mounted on wheels made of longitudinal horizontal and inclined pipes and a bearing seat, and a drive chain mechanism with cranks protected by a casing, connected to the rear wheels, characterized in that the vehicle includes the following mechanisms: lowering a vehicle, comprising a drive handle mounted to rotate and transmit torque through spur gears, an integral sleeve of a bevel gear pair of spur gears and a worm pair, as well as a nut installed with the possibility of translational movement up and down the slot of the cup and moving the telescopic pipe, while the cup is connected through two rods to the saddle with the possibility of turning the vehicle around a vertical axis, and adjustable the height of the expansion cup is connected to the telescopic pipe; a mechanism for expanding and narrowing the base of the chassis, comprising a fork mounted for translational movement of the disk along the telescopic pipe, which is mounted to move along the axis of the wheel drive, the disk being centered by four guide spokes and connected by pulling pins to the wheel rim; a vehicle rotation mechanism around the axis of the pivoting support plate, comprising a pivoting support plate connected by a pin through a support bearing to the seat, and a nut securing the pivoting support plate, and a tilting and lifting mechanism of the chair back containing a chain transmission handle mounted on an arrow drive transmission; the shaft connecting the large gear wheel with a drum installed with the possibility of winding a cable through the loop through the bypass wheels, while the end of the cable is fixed to a roller connected to the back, and the handle stop is installed with the possibility of lifting or tilting the back when fixing or unlocking , and a safety pair of movable wheels is installed behind the rotary support plate.

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