RU2128035C1 - Three-wheel vehicle for invalids - Google Patents

Abstract

FIELD: transport engineering. SUBSTANCE: vehicle has frame with cross-like and round wheels arranged on axle, and springs. When moving along road, round wheels are fixed by lever-operated truncated cones. Lever is held by hand of rider and is connected by tie-rod with axle-shaft of rear wheel-shock absorber on L-shaped suspension. Truncated cones are fitted on slotted axle. Round wheels with couplings are mounted on truncated cones on springs. Springs secured by one end on truncated cones and by other ends, on rims for moving upwards and sideward when running onto step edge, provide possibility of walking up the steps for cross-like wheels. Vehicle can be operated by motor. EFFECT: enlarged operating capabilities, enhanced efficiency of operation, both on road and when moving upstairs. 2 cl, 3 dwg

Description

 The invention relates to wheelchairs for the disabled, having devices that facilitate overcoming obstacles, for example for climbing stairs, and can be used with a motor drive.

 Currently, in the field of production of wheelchairs, a solution is known that is a vehicle that allows people with disabilities to overcome obstacles when moving.

 As an example of such strollers, a vehicle may be considered along a. with. USSR 1572618, 06/23/90, author Sharubin F.I., containing a frame with cruciform and round wheels placed on the axis, as well as springs.

 However, such a vehicle is limited in application and not effective enough when driving outside the stairwells.

 The present invention eliminates this drawback by suspending round springs on the springs next to the cruciform ones and able to move up and to the side when hitting the side of the step due to the vehicle’s own weight, and when leaving the horizontal platform to return to their original position due to the return action of the springs. Returning round wheels are fixed with truncated cones included in the clutches of these wheels by moving the cones along the axis using a special mobile device controlled by a lever that controls the disabled person to move on and off.

 After fixing the round wheel, the motor turns off, because Climbing the stairs and descending is carried out by means of a direct current electric motor, powered by batteries, the disabled person blocks the vehicle manually, orientates it to the next flight of stairs, leads the cone out of the couplings, turns on the electric motor and the staircase climb is repeated. U-turn is carried out due to the free rotation of the rear wheel left, right and back, mounted on the L-shaped suspension.

 The invention is illustrated by drawings.

 In FIG. 1 shows a vehicle, a side view, in FIG. 2 is a plan view of FIG. 3 - the same, rear view.

 The vehicle contains a frame 1 with an axle 2, on the slots of which truncated cones 3 are mounted, then round wheels 4 are mounted on springs 5, fixed at one end on the cones and the other on rims, after which cross-shaped wheels are mounted 6. Round wheels are suspended on springs so that when hitting the edge of the stairs go up to the side (see the dotted line in the drawing), providing the opportunity to walk the vehicle along the steps due to the cross-shaped wheels. Climbing onto a horizontal platform, the cones 3 are introduced into the couplings 7 of the wheels 4 using a mobile U-shaped device 8 connected by a rod 9, controlled by levers 10, on the handle of which is a switch 11 of the electric motor 12, connected by a wire 13 and from the switch 11 - with electrical wiring 14.

 Turning off the motor 12 and fixing the wheel travel, the disabled person manually drives the vehicle to the next march, removes the cone from the couplings, freeing the round wheels for further walking on the cross-shaped wheels, turns on the electric motor and the walking resumes.

 Electricity is supplied to the engine from the batteries 15. All these operations are controlled by a disabled person sitting in a chair 16. The torque from the engine is transmitted through a worm-planetary gear 17 to the driven sprocket 18 using a chain drive 19 to the driven sprocket 20.

 But since the cone 3 rotates with the wheel, and the device 8 should be at rest, then the bearings 21 are pressed into the end of the cone in the center, to which the device 8 is attached.

 When the vehicle is moving along the road manually, the disabled person controls the front wheels and, due to the rear wheel mounted on the L-shaped suspension 23, easily turns left, right or straight.

 The rear wheel 22 is also suspended on the springs 24, one end mounted on the coupling 25, and the other on the rim of the wheel, so that it plays the role of not only the wheels to control the vehicle, but also the shock absorber.

 When driving on a road with an electric motor, a disabled person controls the vehicle with a lever 26 through a rod 27 connected to the axle shaft 28, moving the lever toward itself, away from itself or holding it in a straight direction.

Claims (2)

 1. A three-wheeled vehicle for the disabled, containing springs and a frame with cruciform and round wheels placed on the axis, characterized in that when driving on the road, the round wheels are fixed with truncated cones, controlled by a lever in the hands of the disabled person and connected by a rod to the rear axle shaft - the shock absorber on the L-shaped suspension, while the truncated cones are mounted on an axle having splines, and round wheels with clutches are hung on the truncated cones on springs fixed at one end to the truncated whiskers, and others - on rims to be moved upwardly and laterally when running on stairs face and presentation capabilities to walk the stairs cruciform wheels.  2. The vehicle according to claim 1, characterized in that it contains an engine and batteries.

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