RU86928U1 - VEHICLE - Google Patents

Abstract

1. The vehicle, mainly for the disabled, made with the possibility of movement on stairs and consisting of a folding stroller containing a frame, front small swivel and rear driving wheels of a bicycle type, characterized in that the frame is made of right and left semi-frames, attached to the frame at the back on the fixed consoles, the rear cross-shaped supports, and the front cross-shaped supports are installed using movable consoles on the right and left half frames, with the front and rear cross-shaped supports connected to the Vedas conductive chain wheel, wherein the transformation mechanism is provided at the bottom portion folding strollers and consists of levers, movable consoles, three rods and clamps the carriage position in its two states, providing control and the possibility of transformation of prams transplanting disabled in another device. ! 2. The vehicle according to claim 1, characterized in that a parking brake is provided that operates in both positions of the folding stroller. ! 3. The vehicle according to claim 1, characterized in that a switchable directional brake is provided, which ensures that the folding stroller is braked in the direction opposite to the movement in the position on the cross support. ! 4. The vehicle according to claim 1, characterized in that the drive wheels and cruciform supports are quick-detachable, to reduce the size of the stroller during transportation.

Description

The utility model relates to vehicles powered by the muscular strength of a person, and more particularly, to wheelchairs for the disabled, allowing them to independently move both on a horizontal surface and to overcome staircases in both directions.

The prior art methods and devices are known that allow people with disabilities traveling in wheelchairs to independently climb staircases (see, for example, US 3196970 A dated 07.27.1965 or WO 96/00161 A1 dated 01.01.1996).

The disadvantage of the above technical solutions is the bulkiness and complexity of the structures, their low reliability and extreme complexity in operation.

The closest in technical essence is a vehicle for the disabled (see RU 2220696 C2 dated 01/10/2004), consisting of two half-frames (front and rear) equipped with supporting wheel pairs for moving on a horizontal surface and supporting crosses for overcoming steps. The half-frames rotate around the main horizontal axis, which is perpendicular to the direction of movement, which changes the mode of movement, and the wheelchair reclines 35 degrees back when switching to the mode of movement on the stairs. The support crosses are driven by means of a friction gear, bevel gears, cardans and worm gears.

The disadvantages of this solution include:

- the impossibility of folding the stroller, which dramatically complicates the process of transportation,

- the simplest lever system used in the design for transforming the stroller when changing the driving mode requires efforts that significantly exceed the capabilities of most disabled people, and also does not meet the requirements of GOST R 51083-97 CHAIR-STROLLERS “General technical conditions”,

- the constructive design of the stroller demonstrates the principle of its operation, but does not ensure its safe use; in particular, the sectors for fixing the levers and the levers themselves, ensuring its transformation, are located on the site of the armrests, the armrests themselves are absent, which creates a risk of injury to the user and makes it impossible to transfer the disabled person to another place,

- there are no parking brakes, without which it is impossible to transfer a disabled person to another device, and also there is no brake system,

- a large loss of power during friction meshing and worm gears, which creates a large expenditure of energy of the user when climbing stairs,

- the absence of a mechanism for correcting the movement of the stroller in the case of its angular displacement relative to the steps, as well as when "crossing" the crosses over the step, if they are too narrow.

The objective of the claimed device is to significantly reduce the effort required to switch from one driving mode to another, acceptable to most disabled people and meeting the requirements of the standards, to ensure its rapid folding and the possibility of transportation in the trunk of a car, increasing the safety of use, the possibility of maneuvering on the stairs and increasing stroller comfort.

The technical result obtained when solving the problem is expressed in the maximum simplification of the design and ensuring the manufacture of the product mainly from standard components, in ensuring the versatility of the stroller, which allows you to overcome stairs with any unequal and even dilapidated steps, as well as in increasing K.P.D . drive and to increase its reliability and safety during operation.

The claimed technical result is achieved due to the fact that the proposed vehicle, mainly for the disabled, is configured to move up stairs and is a folding stroller containing a frame, front small swivel and rear driving wheels of a bicycle type. The new one is that the frame is made of right and left semi-frames, the rear cross-shaped supports are mounted on the fixed consoles at the back to the frame, and the front cross-shaped supports are installed with the help of movable consoles on the right and left half-frames, the front and rear cross-shaped supports being connected to the drive wheels by chain gears, while providing a transformation mechanism located at the bottom of the folding stroller and consisting of control levers, movable consoles, three rods and position locks of the stroller in two of its standing, providing control of the transformation of the stroller and the ability to transplant the disabled person to another device. At the same time, a parking brake is provided that works in both positions of the folding stroller and a switchable directional brake, which ensures that the folding stroller is braked in the direction opposite to the movement in the position on the cruciform supports, and the drive wheels and cruciform supports are quick-detachable to reduce the dimensions of the stroller during transportation.

The proposed arrangement, in combination with the use of known components and parts and the implementation of a two-frame frame, allows to simplify the design and ensure the manufacture of the product mainly from standard components, as well as to achieve the versatility of the stroller, consisting in the possibility of overcoming the stairs with any unequal and even dilapidated steps.

Using the proposed drive allows you to increase KPD devices.

The proposed transformation mechanism makes it easier to operate the device and increase its safety.

The presence of a parking and switchable directional brakes also improves the reliability and safety of the device.

Further, the proposed utility model will be disclosed in a preferred embodiment in more detail, with reference to graphic materials on which:

figure 1 - shows a view of the device when driving on wheels,

figure 2 - shows a view of the device when moving up the stairs on the crosses.

The device described below is a folding wheelchair for the disabled and is made, if possible, of the known components and parts used for such devices.

The proposed stroller contains the following components and parts:

- armrest 1, made with the possibility of both reclining and fixing in the lowered position,

- back 2 with height-adjustable handles (not shown),

- a lever 3 for controlling the transformation mechanism, which allows the stroller to be moved from a position for moving on a horizontal surface to a position for moving on stairs and back,

- a directional brake control lever 4, which allows you to switch the directional brake to brake in the direction opposite to the movement (rotation of the drive wheels), in the position on the cross support,

- directional brake 5, made with the possibility of braking the drive wheel in the direction opposite to the movement (rotation of the drive wheels), in the position on the cross support,

- parking brake 6, made with the possibility of braking the drive wheel in both positions of the device,

- the frame 7 of the stroller having a high raised lower part and made of right and left half frames,

- seat 8,

- fastenings 9 of the position lock on the cruciform supports,

- fastening 10 of the console of the drive wheel to the frame,

- a console 11 of the front cruciform support with a lever on which a roller for adjusting the play of the chain is provided,

- oscillating support sleeve 12 of the control lever of the transformation mechanism,

- the housing 13 for mounting the parking brake and directional brake, made with the possibility of mounting to the frame and height adjustment,

- front cruciform support 14, made with the possibility of fastening to the hub of the console and putting on the axis with a cross-shaped flange (for engagement), and having a corresponding mating flange. The front cruciform supports 14 are pressed to the corresponding consoles with a wing-bolt or a bolt with an eccentric clamp (to ensure quick detachment) and are installed using movable consoles on the right and left half frames,

- a rotary sleeve 15 of the front wheel mounted on the inside of the frame,

- the lever 16 of the position lock on the cross support, equipped with springs and made with the possibility of fixing the console of the rear (drive) wheel in position for movement on the cross support,

- a chain 17 of the drive of the cruciform supports provided for transmitting the rotation force from the drive wheel to the cruciform supports in the position of the transformation mechanism for movement on the cruciform supports,

- back cruciform support 18, made similarly to the front cruciform support 14,

- quick-release footrest 19, made with the possibility of height adjustment,

- an asterisk-hub 20 of the console of the front cruciform support, made with the possibility of fastening to the console of the front cruciform support using an axis threaded through a sleeve with bearings. The sprocket wheel 20 has a cross-shaped flange for engagement with the front cross-shaped support and a hole in the axis with a thread for fixing the cross-shaped support,

an intermediate link 21 having an inner chain guide roller,

- rollers 22 chains,

- an asterisk-hub 23 of the console of the rear cruciate support, made similar to the asterisk-hub 20 of the console of the front cruciform support,

- front swivel wheel 24,

- fork 25 of the front swivel wheel,

- the rear drive wheel 26, made with the possibility of fastening with a quick-detachable axis to the rear wheel console bushing,

- fastening of 27 consoles of cruciform supports to the frame,

- console 28 of the rear cruciform support,

- console 29 of the rear drive wheel,

- latch 30 of the transformation control lever, configured to fix the transformation control lever in position for movement on wheels,

- a drive sprocket 31, made with the possibility of mounting to the rear drive wheel from the inside.

The proposed vehicle operates as follows.

Movement on a flat surface. The levers 3 for controlling the transformation mechanism are in the rear starting position at the level of the back of the stroller, which does not interfere with the disabled person, having thrown back the armrest, to transfer to another device. In this case, the cross-shaped supports are raised above the surface and do not interfere with the movement, and the stroller moves like any standard.

Transformation of the stroller to put it into the mode of movement on the stairs. The user of the vehicle - the stroller, grabs the lever arms and gently feeds them forward, first, before lowering the front cruciform supports to the floor. In this case, it is necessary to ensure that the front small swivel wheels are parallel to each other along the side of the stroller and do not interfere with the front crosses. Further, the user gives the levers further forward to the stop, so that the stroller leans back 30 degrees, stands on cross-shaped crosses and its wheels are lifted, i.e. hung out, and the position of the frame is rigidly fixed with clamps.

Movement down the stairs. The user switches the directional brake 5 with the lever 4 to the forward position and starts to smoothly rotate both drive wheels, thereby driving the front and rear cruciform supports, whereby the stroller moves down the steps. After the descent and the full exit of the stroller to a flat surface, the user performs the reverse transformation of the stroller. To do this, the disabled person puts the directional brake 5 in the neutral position, releases the locks by simply pressing the thumbs on the levers 16 located at the level of the upper part of the stroller frame, pulls the levers 3 towards itself, while tilting the case forward, which leads to an easy transition of the stroller to the wheels and raising the front crosses to the inoperative position, while the levers are fixed in the rear position at the level of the back.

Move up the stairs. The movement is carried out in reverse, for which the user switches the directional brake 5 with lever 4 to the reverse position and starts to smoothly rotate the drive wheels backward, as a result of which the stroller rises up the steps.

Working tests of the model showed that, due to a sufficient degree of freedom of the right and left sides, interconnected only by an X-shaped folding device and independent drive wheels when moving up the stairs, the stroller freely adjusts its movement, remains stable when roll to one side to 10 degrees and without labor goes through narrow steps without tipping forward.

Thus, the proposed vehicle for the movement of persons with disabilities is a device that is easy to manufacture and use, which, in comparison with known analogues, has increased reliability, comfort and increased K.P.D. and allows you to significantly reduce the effort required to switch from one mode of movement to another, to ensure its rapid folding and the possibility of transportation in the trunk of a car, as well as to increase the possibility of maneuvering on different quality stairs.

Claims (4)

1. The vehicle, mainly for the disabled, made with the possibility of movement on stairs and consisting of a folding stroller containing a frame, front small swivel and rear driving wheels of a bicycle type, characterized in that the frame is made of right and left semi-frames, attached to the frame at the back on the fixed consoles, the rear cross-shaped supports, and the front cross-shaped supports are installed using movable consoles on the right and left half frames, with the front and rear cross-shaped supports connected to the Vedas conductive chain wheel, wherein the transformation mechanism is provided at the bottom portion folding strollers and consists of levers, movable consoles, three rods and clamps the carriage position in its two states, providing control and the possibility of transformation of prams transplanting disabled in another device. 2. The vehicle according to claim 1, characterized in that a parking brake is provided that operates in both positions of the folding stroller. 3. The vehicle according to claim 1, characterized in that a switchable directional brake is provided, which ensures that the folding stroller is braked in the direction opposite to the movement in the position on the cross support. 4. The vehicle according to claim 1, characterized in that the drive wheels and cruciform supports are quick-detachable, to reduce the size of the stroller during transportation.